At the A1 level, the word 'dependencies' is quite advanced. However, you can think of it as a big word for 'needing things.' Imagine you want to make a sandwich. You need bread. You need cheese. You need a knife. These are things you rely on. In English, when many things are needed for one job, we can call them 'dependencies.' It is like a team where everyone must do their part. If the bread is not there, you cannot make the sandwich. The sandwich 'depends' on the bread. We use the plural 'dependencies' when there are many things we need. For example, 'To go to school, I have dependencies: I need my bag, my books, and the bus.' It is a formal way to say 'the things I need to finish my work.' You might not use this word every day, but you will see it in school or on a computer. Just remember: Dependency = Needing something. Dependencies = Many things you need.
At the A2 level, you can start using 'dependencies' to talk about how tasks are connected. It is a noun that means 'things that must happen first.' For example, if you are planning a party, you have dependencies. You cannot send the invitations until you choose a date. Choosing a date is a dependency for sending invitations. In a simple sentence: 'The project has many dependencies.' This means there are many steps that rely on each other. You often hear this word when people talk about computers or work. If a computer program does not work, it might be because of 'missing dependencies'—this means the program is looking for other small programs it needs to run. It is a more professional word than just saying 'needs.' Instead of saying 'I need many things to finish,' you can say 'I have several dependencies.' This makes you sound more organized and serious about your work.
At the B1 level, 'dependencies' is an important word for describing systems and project plans. It refers to the state of relying on something else, or the specific items that are relied upon. In a professional context, identifying dependencies is a key part of planning. For instance, if you are a manager, you might say, 'We need to identify the dependencies between the design team and the marketing team.' This means you want to know which tasks the marketing team cannot start until the design team is finished. It is also used in technology to describe software libraries that a program needs. A common phrase is 'managing dependencies,' which means making sure all the necessary parts are available and working together. You should also be careful not to confuse it with 'dependents' (people who rely on you for money). 'Dependencies' are usually tasks, tools, or abstract relationships. It is a very useful word for explaining why a project might be delayed or why a system is complex.
At the B2 level, you should use 'dependencies' to analyze complex situations and power dynamics. It is not just about 'needing' something; it is about the structural relationship of reliance. In economics, you might discuss 'resource dependencies,' where a country's economy is vulnerable because it relies too much on one export, like oil. In software engineering, you will deal with 'dependency injection' or 'circular dependencies,' which are technical ways of managing how different parts of a program interact. The word implies a certain level of risk; if a dependency fails, the whole system might stop. You can use it in sentences like, 'The success of the merger is subject to several regulatory dependencies.' This sounds much more professional than saying 'The merger depends on some rules.' It shows you understand that there are specific, formal conditions that must be met. You should also be comfortable using it metaphorically, such as 'the emotional dependencies that develop in long-term friendships.'
At the C1 level, 'dependencies' is a staple of your academic and professional vocabulary. You use it to describe the intricate web of cause-and-effect in any system. You might analyze 'path dependencies,' which is the idea that past decisions limit future options. In a corporate environment, you would use the term to discuss 'strategic dependencies'—the external factors or partners that are critical to a company's survival. You should be able to discuss the nuances between 'tightly coupled dependencies' (where things are very closely linked and a small change causes big problems) and 'loosely coupled dependencies' (where there is more flexibility). Your usage should be precise: 'The architectural integrity of the system was compromised by a series of unmanaged dependencies.' This level of English requires you to see 'dependencies' as a key variable in any equation, whether you are talking about sociology, engineering, or international relations. You are not just describing a need; you are describing a structural vulnerability or a logical sequence.
At the C2 level, the word 'dependencies' becomes a tool for high-level systems thinking and philosophical inquiry. You might explore the 'existential dependencies' of modern civilization on digital infrastructure, or the 'ontological dependencies' in a philosophical argument. In a business context, you are likely managing 'cross-functional dependencies' across global organizations, where you must account for cultural, legal, and logistical reliances simultaneously. You use the word to critique and deconstruct systems. For example, 'The prevailing economic model fails to account for the ecological dependencies that sustain industrial growth.' Here, you are using the word to point out a systemic blind spot. You are also aware of the historical and etymological roots of the word, understanding how the concept of 'hanging from' (from the Latin 'dependere') informs our modern understanding of being 'suspended' by our needs. At this level, 'dependencies' is not just a word; it is a framework for understanding the interconnected and often fragile nature of reality.

dependencies 30秒で

  • Dependencies are the 'must-haves' or 'prerequisites' in any plan, system, or software, representing the items or tasks that others rely on to function.
  • In project management, identifying dependencies helps in creating accurate schedules by showing which tasks are blocked until others are finished first.
  • The word is commonly used in technical fields to describe external code libraries that a software application needs to operate correctly.
  • Beyond tech, it describes economic or personal relationships where one party relies on another for resources, support, or continued existence.

The term dependencies is a multifaceted noun that describes the state of being contingent upon or controlled by something else. In its most fundamental sense, it refers to a relationship where one entity requires another to function, exist, or succeed. Imagine a complex web where pulling one string causes a ripple effect across the entire structure; those connected strings represent dependencies. In everyday conversation, we might talk about our dependencies on technology, such as how a modern office cannot operate without a stable internet connection. However, the word takes on a more rigorous definition in professional fields like project management, software engineering, and economics. In these contexts, dependencies are specific tasks, resources, or conditions that must be satisfied before a subsequent action can take place. For example, in building a house, the installation of the roof has a dependency on the completion of the structural walls. You cannot have the former without the latter. This concept is vital for planning and risk assessment because failing to account for dependencies often leads to systemic collapse or significant delays.

Technical Context
In software development, dependencies refer to external libraries or modules that a program needs to run. If a developer writes a script that uses a specific data-processing tool, that tool is a dependency. Managing these is a full-time job for many engineers, as updating one dependency might break another part of the system.
Project Management
Here, dependencies are categorized into types like 'Finish-to-Start' or 'Start-to-Start.' It is the logical sequencing of events. A marketing campaign has dependencies on the design team's output and the legal team's approval. Without identifying these early, the project timeline is merely a guess.
Economic and Global Scale
Nations have economic dependencies on trade partners for energy, food, or technology. This interconnectedness means that a disruption in one country can cause a supply chain crisis globally, highlighting the fragile nature of modern dependencies.

The project manager spent the entire morning mapping out the dependencies between the software development team and the hardware manufacturers to ensure no one was waiting idly.

Understanding dependencies is about understanding causality and sequence. It is not just about needing something; it is about the structural necessity of that need. In psychology, we might discuss emotional dependencies, where one person's well-being is overly tied to another's actions. While the word is plural, it implies a network. We rarely have just one dependency; usually, we are dealing with a complex array of factors that all must align. When people use this word, they are often signaling a need for careful coordination. They are saying, 'We cannot move forward in a vacuum; we must consider the external factors that hold power over our progress.' It is a word of maturity and systemic thinking, moving away from the idea of total independence toward a realistic view of how the world is interconnected.

Our supply chain dependencies on rare earth minerals make our production line vulnerable to geopolitical shifts.

In summary, 'dependencies' is the plural noun for the things we rely on. It bridges the gap between simple 'needs' and complex 'requirements.' Whether you are talking about a computer program, a construction site, or a personal relationship, identifying dependencies is the first step toward stability and success. It allows for the creation of 'contingency plans'—what we do if a dependency fails. Without this word, we struggle to describe the 'why' behind delays and the 'how' of complex systems. It is a cornerstone of logical planning and critical analysis in the 21st century.

Using the word dependencies correctly requires an understanding of its grammatical role as a plural count noun. It almost always appears in contexts where multiple factors are at play. When you use it, you are typically describing a relationship between two or more things. The most common preposition associated with it is 'on' or 'between.' For instance, you might say 'the dependencies on foreign oil' or 'the dependencies between the two departments.' Because it is a formal and technical term, it often serves as the subject or object in complex sentences that analyze systems or processes.

As a Subject
'Dependencies often create bottlenecks in the production cycle.' Here, the word is the actor, causing a specific result (bottlenecks). This usage is common in reports and analytical writing.
As an Object
'We need to map out all project dependencies before we set a deadline.' In this case, dependencies are the thing being mapped. This is a very common phrasing in business and engineering.
With Verbs of Management
Common verbs that pair with dependencies include: identify, manage, resolve, reduce, track, and eliminate. For example: 'The team successfully resolved the circular dependencies that were crashing the server.'

By identifying the dependencies early, the architect was able to prevent a major structural flaw in the skyscraper's design.

When writing, consider the 'direction' of the dependency. Is it a 'upstream' dependency (something you need from others) or a 'downstream' dependency (something others need from you)? While the word itself doesn't change, the context around it should make this clear. For example, 'Our team has several dependencies on the data department' clearly shows the direction of reliance. Furthermore, 'dependencies' can be used metaphorically in literature or social commentary to describe the lack of autonomy. 'The colony's economic dependencies on the empire led to a slow erosion of its political sovereignty.' This elevates the word from a mere technical term to a powerful tool for describing power dynamics.

The software update failed because the installer could not find the necessary dependencies in the local directory.

In academic writing, 'dependencies' is often used to describe variables. 'The study examines the dependencies between sleep quality and cognitive performance.' Here, it suggests a correlation where one variable is influenced by another. This usage is precise and professional. Avoid using 'dependencies' when you simply mean 'needs' in a casual setting. Saying 'I have many dependencies on my morning coffee' is grammatically correct but sounds overly robotic or humorous. Reserve it for situations where you are describing a structured or formal relationship of reliance. By mastering this word, you demonstrate an ability to think about how parts fit into a whole, which is a key skill in both advanced English and professional life.

If you step into a modern corporate office, a software development hub, or a government planning session, you will hear the word dependencies constantly. It is the 'bread and butter' of organizational logic. In a Monday morning 'stand-up' meeting, a developer might say, 'I'm blocked because of dependencies on the API team.' This means they cannot finish their work until another team finishes theirs. In this context, 'dependencies' is a synonym for 'blockers' or 'requirements.' It is a way of communicating why things aren't moving as fast as they should be. It shifts the focus from individual failure to systemic flow.

In Tech Support
You might hear a technician say, 'The app is crashing because of missing dependencies.' This refers to files like DLLs or packages that the app needs to function. It's a very common phrase in troubleshooting guides and error messages.
In Economics News
News anchors often discuss 'energy dependencies' or 'trade dependencies.' They are talking about how one country's economy is tied to another's resources. It's a word used to describe vulnerability and international relations.
In Healthcare
Doctors and social workers use the term to describe a patient's level of care. 'The patient has several physical dependencies and requires 24-hour assistance.' Here, it refers to the inability to perform daily tasks without help.

During the board meeting, the CEO emphasized that reducing our dependencies on a single supplier was the company's top priority for the year.

Beyond the office, you might encounter this word in social science podcasts or self-help books. Discussions about 'codependency' in relationships are a derivative of this concept. It describes a situation where two people have unhealthy emotional dependencies on each other. In this realm, the word carries a slightly negative connotation, suggesting a lack of individual strength or autonomy. However, in most other fields, it is a neutral, descriptive term. It is also a staple of academic lectures in fields like systems theory, ecology (where species have dependencies on their environment), and political science.

The documentary explored the complex dependencies between the local fishing community and the health of the coral reef.

Ultimately, 'dependencies' is a word that signals complexity. When you hear it, you should visualize a map or a flowchart. It tells you that the topic at hand is not simple or isolated. It is a favorite word of consultants and analysts because it allows them to describe the 'interconnectedness' of a problem. Whether it's a 'dependency graph' in a computer science textbook or a 'dependency ratio' in a demographic study about aging populations, the word is everywhere that systems are studied. It is a high-frequency word for anyone working in a professional, technical, or academic environment, and hearing it should immediately trigger a thought process about 'what comes first' and 'what relies on what.'

While dependencies is a powerful word, it is frequently misused or confused with similar-sounding terms. The most common error is confusing 'dependencies' with 'dependents.' While they share the same root, they have very different meanings in specific contexts. A 'dependent' (noun) is usually a person, such as a child or a spouse, who relies on someone else for financial support, especially for tax purposes. 'Dependencies' (noun, plural), on the other hand, refers to the abstract state of reliance or the specific things/tasks relied upon. You wouldn't say 'I have three dependencies' if you mean you have three children; you would say 'I have three dependents.'

Confusion with 'Dependents'
Incorrect: 'The employee listed his wife and son as his dependencies.' Correct: 'The employee listed his wife and son as his dependents.' This is a classic mistake in HR and legal documents.
Circular Dependencies
In logic and programming, a 'circular dependency' is a mistake where A depends on B, and B depends on A. This creates a loop that can never be resolved. People often use the word without realizing they are describing a logical impossibility.
Overuse as a Buzzword
Sometimes people use 'dependencies' to sound more professional when 'needs' or 'requirements' would be clearer. If you are just talking about needing a pen to write, calling it a 'dependency' is overkill and can make your speech sound stiff and unnatural.

Mistake: 'We need to fix the dependencies of the children.' Correction: 'We need to address the needs of the children' or 'the children are dependents.'

Another subtle mistake is the incorrect use of prepositions. You have a dependency on something, not 'to' or 'with' something. For example, 'Our dependency to the old system' is incorrect; it should be 'Our dependency on the old system.' Additionally, learners often forget that 'dependencies' is the plural form. While you can say 'This is a major dependency,' in professional settings, you are almost always dealing with a network of them, so the plural is usually the safer and more common choice. Using the singular when referring to a complex list can make the speaker sound like they don't fully grasp the scale of the issue.

Incorrect: 'The software has many dependancies.' Correct: 'The software has many dependencies.'

Finally, avoid using 'dependencies' when you mean 'addictions.' While addiction is a form of dependency (chemical dependency), in modern English, using 'dependencies' to describe a drug or alcohol problem can sound like a euphemism or an outdated medical term. It's better to be specific. In a technical or project context, 'dependencies' is the gold standard. In a personal or medical context, use it with caution to ensure you aren't being vague or confusing your audience. By avoiding these common pitfalls, you can use this word with the precision and authority it requires.

To truly master the word dependencies, it is helpful to understand its synonyms and how they differ in nuance. While 'dependencies' is the most common term in technical and project management contexts, other words might be more appropriate depending on the 'flavor' of reliance you are trying to convey. For example, 'requirements' is a broader term that includes things you need, but not necessarily things you are waiting for. 'Contingencies' refers to things that might happen and what you will do if they do. Understanding these distinctions allows for more precise communication.

Dependencies vs. Requirements
A 'requirement' is something a project must have (e.g., 'The car must have four wheels'). A 'dependency' is a relationship of timing or reliance (e.g., 'We cannot install the wheels until the axles are delivered'). Requirements are about 'what,' while dependencies are about 'when' and 'how.'
Dependencies vs. Reliance
'Reliance' is often used in a more personal or emotional context. 'Our reliance on his expertise' sounds more human than 'Our dependency on his expertise.' Reliance suggests trust, while dependency suggests a structural or mechanical need.
Dependencies vs. Interconnections
'Interconnections' is a neutral term for things being linked. 'Dependencies' is more specific—it implies that if one thing fails, the other cannot continue. Interconnections are just connections; dependencies are critical paths.

While the two systems have many interconnections, they have very few actual dependencies, meaning one can usually run without the other.

Other alternatives include 'subordinations' (rare, mostly used in legal or military contexts), 'linkages' (common in economics), and 'constraints' (common in engineering). A 'constraint' is something that limits you, which a dependency often does. If you are looking for a more informal word, you might use 'hang-ups' or 'bottlenecks,' though these focus more on the problems caused by dependencies rather than the dependencies themselves. In software, you might hear the term 'packages' or 'libraries' used interchangeably with dependencies, as these are the physical manifestations of the reliance.

The CEO's speech focused on moving the company from a state of dependency to a state of autonomy.

In summary, choose 'dependencies' when you want to describe a logical, structural, or technical relationship where one thing relies on another to proceed. Use 'requirements' for necessary features, 'reliance' for human or emotional trust, and 'constraints' for things that limit your options. By having this palette of similar words, you can avoid repetition and ensure your writing is as precise as possible. This level of nuance is what separates a proficient English speaker from a truly advanced one. Whether you are writing a technical manual or a business proposal, selecting the right word for the right type of 'need' is essential for clarity and professional impact.

How Formal Is It?

豆知識

The word 'pendant' (jewelry that hangs) and 'pendulum' (a hanging weight) come from the same Latin root 'pendere.' So, a 'dependency' is metaphorically something that 'hangs' on another task!

発音ガイド

UK /dɪˈpen.dən.siz/
US /dɪˈpen.dən.siz/
The primary stress is on the second syllable: di-PEN-den-cies.
韻が合う語
Frequencies Tendencies Consistencies Contingencies Deficiencies Efficiencies Lenicencies Urgentcies
よくある間違い
  • Pronouncing it as 'de-pen-DANCE-ies' (wrong stress and vowel).
  • Missing the 'n' in the middle: 'de-pe-de-cies'.
  • Confusing the 'ies' ending with 'ce' (dependency vs dependencies).
  • Stressing the first syllable: 'DE-pen-den-cies'.
  • Swapping the 'e' and 'a' sounds in the middle.

難易度

読解 4/5

The word is common in technical texts but requires context to understand the specific type of reliance.

ライティング 5/5

Spelling the word correctly and using the right prepositions (on/between) can be tricky for learners.

スピーキング 3/5

Once the pronunciation is mastered, it is easy to use in professional conversations.

リスニング 4/5

It is often spoken quickly in meetings, so learners must listen for the 'pen' syllable.

次に学ぶべきこと

前提知識

Depend Need Rely Requirement Support

次に学ぶ

Interdependence Contingency Prerequisite Bottleneck Infrastructure

上級

Path dependency Asymmetrical dependency Systemic risk Causality Modularity

知っておくべき文法

Pluralization of -y nouns

Dependency becomes dependencies by changing 'y' to 'i' and adding 'es'.

Prepositional Collocation

Always use 'on' when describing what is being relied upon: 'Dependency on technology'.

Countability

Use 'many' or 'several' with dependencies, not 'much'.

Subject-Verb Agreement

Since 'dependencies' is plural, use plural verbs: 'The dependencies ARE clear.'

Gerunds as Subjects

'Managing dependencies is difficult.' The gerund 'Managing' is the singular subject.

レベル別の例文

1

I have many dependencies for my homework, like my pen and book.

I need many things for my homework.

Uses 'dependencies' as a plural noun meaning 'things needed'.

2

The computer has dependencies to work.

The computer needs things to work.

Simple subject-verb-object structure.

3

Our dependencies are simple: food and water.

The things we need are simple.

Uses a colon to list the dependencies.

4

Do you have any dependencies for this task?

Do you need anything to do this job?

Question form.

5

The dependencies for the game are a ball and a field.

To play the game, you need a ball and a field.

Plural noun with 'are'.

6

We must check our dependencies before we start.

We must check what we need first.

Modal verb 'must' followed by 'check'.

7

The car has many dependencies, like fuel.

The car needs many things, like gas.

Uses 'like' to give an example.

8

My dependencies for the trip are my passport and money.

I need my passport and money for the trip.

Possessive 'my' modifying 'dependencies'.

1

The software update failed because of missing dependencies.

The update didn't work because some parts were missing.

Common technical phrase 'missing dependencies'.

2

We need to list all the dependencies for the project.

We must write down everything the project relies on.

Infinitive 'to list' as the main action.

3

There are several dependencies between these two tasks.

These two jobs are connected and rely on each other.

Preposition 'between' used to show relationship.

4

The team is managing the dependencies to avoid delays.

The team is watching the needs so they don't get late.

Present continuous 'is managing'.

5

What are the main dependencies for this new app?

What does this new app need to run?

Interrogative sentence with 'what'.

6

He explained the dependencies of the building plan.

He talked about what the building plan relies on.

Possessive 'of' construction.

7

Without these dependencies, the system will not start.

The system won't work if these things are missing.

Conditional 'without' starting the sentence.

8

The project manager is tracking all dependencies daily.

The manager checks the needs every day.

Adverb 'daily' modifying the verb.

1

Identifying project dependencies is crucial for a realistic timeline.

Finding out what relies on what is very important for the schedule.

Gerund 'Identifying' as the subject.

2

The company is trying to reduce its dependencies on a single supplier.

The company wants to stop relying so much on just one seller.

Preposition 'on' after 'dependencies'.

3

We found some circular dependencies in the code that caused a loop.

We found parts of the code that relied on each other in a circle.

Technical term 'circular dependencies'.

4

The report highlights the economic dependencies between the two nations.

The report shows how the two countries' economies rely on each other.

Verb 'highlights' used in a formal context.

5

Managing external dependencies can be the hardest part of the job.

Dealing with things outside your control is often the most difficult.

Adjective 'external' modifying 'dependencies'.

6

The application requires several third-party dependencies to function.

The app needs other companies' software to work.

Compound adjective 'third-party'.

7

You must resolve these dependencies before the next phase begins.

You have to fix these reliances before the next part starts.

Temporal clause starting with 'before'.

8

The document outlines the technical dependencies of the server.

The paper describes what the server needs to run.

Verb 'outlines' meaning to describe the main points.

1

The project's critical dependencies were not properly documented.

The most important reliances were not written down correctly.

Passive voice 'were not properly documented'.

2

Resource dependencies can lead to significant geopolitical tensions.

Relying on resources can cause problems between countries.

Modal 'can lead to' expressing possibility.

3

The software architect focused on minimizing cross-module dependencies.

The designer tried to make the different parts of the program less reliant on each other.

Compound noun 'cross-module dependencies'.

4

Our dependencies on legacy systems are hindering our digital transformation.

Relying on old computers is stopping us from becoming modern.

Present continuous 'are hindering'.

5

The analysis revealed several hidden dependencies in the supply chain.

The study showed some reliances that we didn't know about before.

Verb 'revealed' used for discoveries.

6

The team spent weeks resolving the dependencies between the front-end and back-end.

The team worked for a long time to fix how the two parts of the site talk to each other.

Duration 'spent weeks' followed by a gerund.

7

Financial dependencies can often limit a company's ability to innovate.

Needing money from others can stop a company from trying new things.

Abstract noun 'ability' modified by an infinitive.

8

The environmental impact report noted the dependencies of local wildlife on the river.

The report said the local animals need the river to survive.

Formal reporting verb 'noted'.

1

The complexity of the system is largely due to its intricate web of dependencies.

The system is hard to understand because everything relies on everything else.

Prepositional phrase 'due to' explaining cause.

2

We must mitigate the risks associated with our dependencies on foreign markets.

We need to lower the dangers of relying on other countries' buyers.

Verb 'mitigate' meaning to make less severe.

3

The study explores the path dependencies that shaped the city's current infrastructure.

The research looks at how past choices forced the city to be built this way.

Academic term 'path dependencies'.

4

The failure was attributed to a cascade of unmanaged dependencies.

The crash happened because one thing failed and then everything else failed too.

Passive voice 'was attributed to'.

5

The architect advocated for a decoupled design to reduce systemic dependencies.

The designer wanted a system where parts are separate to avoid reliance issues.

Verb 'advocated for' meaning to support publicly.

6

The geopolitical landscape is defined by mutual dependencies between major powers.

The world situation is based on how big countries rely on each other.

Adjective 'mutual' showing two-way reliance.

7

The software's dependencies are managed through an automated package manager.

A computer program takes care of all the things the software needs.

Instrumental 'through' showing the method.

8

The organization is auditing its dependencies to ensure business continuity.

The group is checking its reliances to make sure it can keep working.

Gerund 'auditing' implying a formal review.

1

The philosopher argued that human autonomy is an illusion given our myriad biological dependencies.

The thinker said we aren't truly free because we rely on so many body processes.

Adjective 'myriad' meaning a countless number.

2

The economic crisis exposed the fragility of global supply chain dependencies.

The money problems showed how easily the world's trade reliances can break.

Noun 'fragility' as the object of 'exposed'.

3

The software's architecture exhibits high cohesion but suffers from excessive external dependencies.

The program's parts work well together, but it relies too much on outside things.

Technical contrast between 'cohesion' and 'dependencies'.

4

The treaty aims to recalibrate the asymmetrical dependencies between the two regions.

The agreement wants to fix the unfair way the two areas rely on each other.

Verb 'recalibrate' meaning to adjust precisely.

5

The researcher posited that cultural dependencies are often more resilient than economic ones.

The scientist suggested that relying on culture lasts longer than relying on money.

Verb 'posited' meaning to put forward as a fact.

6

The system's failure was a direct consequence of a circular dependency in its logic gates.

The machine broke because its basic logic was stuck in a loop.

Noun 'consequence' followed by 'of'.

7

Modern urban life is characterized by a profound dependency on invisible technological layers.

City life today relies deeply on tech that we cannot see.

Adjective 'profound' showing depth.

8

The report critiques the neocolonial dependencies perpetuated by current trade agreements.

The paper attacks the way new trade rules keep old power reliances alive.

Participle 'perpetuated' acting as an adjective.

よく使う組み合わせ

Identify dependencies
Manage dependencies
Circular dependencies
External dependencies
Critical dependencies
Missing dependencies
Economic dependencies
Map out dependencies
Resolve dependencies
Mutual dependencies

よく使うフレーズ

Dependency graph

— A visual representation of how different parts of a system rely on each other. It uses nodes and arrows to show the flow of reliance.

The dependency graph showed that the entire project relied on one single task.

Dependency injection

— A software design pattern where one object provides the dependencies of another object. It is used to make code more flexible.

We used dependency injection to make our testing process easier.

Path dependency

— The idea that current decisions are limited by past events or decisions. It explains why some systems are hard to change.

The keyboard layout we use is a result of path dependency from old typewriters.

Dependency ratio

— A measure used in demographics to show the number of people who are not in the labor force compared to those who are.

The country's high dependency ratio is putting a strain on the healthcare system.

Upstream dependency

— A task or resource that you need from someone else before you can start your work.

The design team is an upstream dependency for the developers.

Downstream dependency

— A person or team that is waiting for your work before they can start theirs.

The marketing team is a downstream dependency of the product launch.

Resource dependency

— A situation where an organization relies on external resources to survive.

The charity has a high resource dependency on government grants.

Systemic dependencies

— Reliances that are built into the very structure of a large system.

The global economy has systemic dependencies on digital communication.

Soft dependencies

— Tasks that should ideally happen in a certain order but are not strictly required to do so.

The review is a soft dependency; we can start the next phase if it's delayed.

Hard dependencies

— Tasks that absolutely must be finished before the next one can begin.

Pouring the concrete is a hard dependency for building the walls.

よく混同される語

dependencies vs Dependents

Dependents are people (like children) you support financially. Dependencies are things or tasks you rely on.

dependencies vs Dependence

Dependence is the general state of relying on something. Dependencies are the specific items or tasks themselves.

dependencies vs Independence

This is the opposite. People sometimes confuse the two when discussing 'interdependence' (mutual reliance).

慣用句と表現

"A house of cards"

— A system with so many fragile dependencies that it could easily collapse. It describes a very unstable situation.

Without proper funding, the whole project is just a house of cards.

Informal
"The weak link in the chain"

— The specific dependency that is most likely to fail and cause the whole system to break.

The old server is the weak link in the chain of our IT infrastructure.

Neutral
"Putting all your eggs in one basket"

— Creating a dangerous dependency on a single person, resource, or idea.

Relying on one client is putting all your eggs in one basket.

Informal
"Tied to someone's apron strings"

— An unhealthy emotional or financial dependency on another person, usually a parent.

At thirty, he is still tied to his mother's apron strings.

Informal
"A two-way street"

— Describes mutual dependencies where both parties rely on and benefit from each other.

Our partnership is a two-way street; we both need each other's help.

Neutral
"Holding the keys to the kingdom"

— Being the person who controls a critical dependency that everyone else needs.

The lead developer holds the keys to the kingdom because only he knows the password.

Informal
"At the mercy of"

— Being completely dependent on something or someone else's power or decisions.

The farmers are at the mercy of the weather for a good harvest.

Neutral
"In the same boat"

— Sharing the same dependencies or problems as others.

We are all in the same boat; if the power goes out, none of us can work.

Informal
"The domino effect"

— When one dependency fails, causing a series of other failures in a chain reaction.

The strike at the port caused a domino effect across the entire retail industry.

Neutral
"Cut the cord"

— To end a dependency and become independent.

The company decided to cut the cord and stop using the expensive consultant.

Informal

間違えやすい

dependencies vs Dependents

They sound almost identical and share the same root.

Dependents refers to people; dependencies refers to things, tasks, or logical reliances.

He has three dependents (children), but his project has ten dependencies (tasks).

dependencies vs Requirements

Both describe things that are needed.

Requirements are features or qualities something must have. Dependencies are relationships where one thing relies on another's completion.

A requirement for the car is an engine; a dependency is that the engine must be built before the car can be assembled.

dependencies vs Prerequisites

Both refer to things that must happen first.

Prerequisites are often formal rules (like classes). Dependencies are often logical or physical necessities in a workflow.

The prerequisite for the course is Math 1; the dependency for the exam is having a pencil.

dependencies vs Addictions

Both involve a strong reliance on something.

Addiction is a medical or psychological term for harmful reliance. Dependency is a neutral term for any kind of reliance.

He has a dependency on his morning coffee, but the doctor treated his addiction to nicotine.

dependencies vs Constraints

Both limit what you can do.

A constraint is a boundary or limit (like a budget). A dependency is a specific link to another task or resource.

The budget is a constraint; the approval from the manager is a dependency.

文型パターン

A2

The [noun] has dependencies.

The project has dependencies.

B1

We need to [verb] the dependencies.

We need to identify the dependencies.

B1

There are dependencies on [noun].

There are dependencies on the new server.

B2

The [noun] is delayed due to [adjective] dependencies.

The launch is delayed due to external dependencies.

B2

By [gerund] the dependencies, we can [verb].

By mapping the dependencies, we can avoid mistakes.

C1

The [noun] is characterized by its [adjective] dependencies.

The economy is characterized by its resource dependencies.

C1

Mitigating the risks of [noun] dependencies is [adjective].

Mitigating the risks of supply chain dependencies is essential.

C2

The [noun] highlights the [adjective] nature of [noun] dependencies.

The crisis highlights the fragile nature of global dependencies.

語族

名詞

Dependency (singular)
Dependent (a person who relies on another)
Dependence (the state of relying on something)
Dependability (the quality of being reliable)

動詞

Depend (to rely on)
Depended (past tense)
Depending (present participle)

形容詞

Dependent (relying on something)
Dependable (reliable)
Codependent (mutually reliant in an unhealthy way)
Independent (not reliant)

関連

Interdependence
Independence
Reliability
Requirement
Subordination

使い方

frequency

Common in professional and technical English; less common in casual conversation.

よくある間違い
  • Using 'dependencies' instead of 'dependents'. I have two dependents (my children).

    Dependents are people you support; dependencies are things you rely on.

  • Spelling it 'dependancies'. The project has many dependencies.

    The word is spelled with an 'e', not an 'a'.

  • Saying 'dependency to'. Our dependency on the internet is growing.

    The correct preposition is 'on'.

  • Using it for simple needs in casual speech. I need some milk.

    Calling milk a 'dependency' in a grocery store sounds very strange and overly formal.

  • Confusing it with 'addiction' in a medical sense. He is being treated for substance addiction.

    While 'chemical dependency' is a term, 'addiction' is more common and clear in modern English.

ヒント

Be Specific

When you mention dependencies in a meeting, always be ready to list them. Saying 'we have dependencies' without naming them can frustrate your team.

Check the Preposition

Always use 'on' after dependencies. 'Our dependency on the cloud' is correct. 'Our dependency to the cloud' is not.

The 'E' Rule

Remember that dependencies is spelled with three 'e's before the 'n-c-i-e-s'. Never use an 'a'!

Use it for 'Blockers'

If you are waiting for someone else to finish their work, say 'I have a dependency on the other team.' It sounds more professional than 'I'm waiting for them.'

Learn the Family

Knowing 'depend,' 'dependent,' and 'dependence' will help you understand 'dependencies' in any context.

Identify Early

In any plan, find your dependencies in the first week. This prevents surprises and delays later on.

Software Context

If you are a coder, learn how your language's 'package manager' handles dependencies. It's a vital skill.

Use Plural

Unless there is strictly only one thing you rely on, use the plural 'dependencies.' It reflects the complexity of most systems.

Listen for Stress

Native speakers stress the 'PEN' syllable. If you hear 'di-PEN...', they are likely talking about dependencies.

Mutual Reliance

Use 'mutual dependencies' to describe a healthy, balanced relationship where both sides help each other.

暗記しよう

記憶術

Think of a 'PEN' hanging from a 'DEN'. You can't write in the DEN without your PEN. That's a de-PEN-dency. The PEN is what you need to start.

視覚的連想

Visualize a chain. Each link 'hangs' on the one before it. If you remove one link, the whole chain falls apart. Those links are the dependencies.

Word Web

Reliance Project Plan Software Library Prerequisite Bottleneck Connection Support Sequence

チャレンジ

Write down five things you need to do to get ready for work or school. Now, identify which ones are dependencies (e.g., you can't put on shoes until you put on socks).

語源

The word comes from the Latin 'dependere,' which literally means 'to hang from.' The prefix 'de-' means 'down' and 'pendere' means 'to hang.' It entered Middle English via the Old French word 'dependre.'

元の意味: Originally, it described something physically hanging down from another object. Over time, it evolved to describe the abstract concept of being 'suspended' or supported by something else.

It is part of the Indo-European family, specifically the Italic branch leading to Latin and then Romance languages.

文化的な背景

Be careful when using 'dependencies' to describe people in a social context, as it can sound dehumanizing or imply they are a burden. Use 'dependents' for family or 'reliance' for friends.

In the US and UK, using 'dependencies' in a meeting suggests you are a logical, systems-oriented thinker. It is a 'power word' in management.

The 'Dependency Theory' in international relations, which explains how wealthy nations rely on poorer ones for resources. The 'Declaration of Independence'—the most famous document about breaking dependencies. Software tools like 'npm' or 'Maven' which are called 'dependency managers.'

実生活で練習する

実際の使用場面

Software Development

  • Install dependencies
  • Update dependencies
  • Dependency conflict
  • Missing dependencies

Project Management

  • Critical path dependencies
  • Task dependencies
  • Map dependencies
  • Resolve blockers

Economics

  • Trade dependencies
  • Resource dependency
  • Economic reliance
  • Supply chain dependencies

Psychology

  • Emotional dependencies
  • Codependency issues
  • Healthy reliance
  • Attachment styles

Construction

  • Structural dependencies
  • Sequence of work
  • Permit dependencies
  • Material availability

会話のきっかけ

"What are the main dependencies that are currently slowing down your team's progress?"

"How do you usually manage dependencies when you are working on a complex project?"

"Do you think our society has too many dependencies on digital technology?"

"Can you identify any circular dependencies in our current workflow that we should fix?"

"What are the external dependencies we need to consider before launching this product?"

日記のテーマ

Reflect on your daily routine. What are the three biggest dependencies that allow your day to run smoothly?

Think of a time a project failed. Were there any unmanaged dependencies that contributed to the failure?

How does the concept of 'dependencies' change your view of independence and self-sufficiency?

Describe a complex system you know well (like a hobby or a job). What are its most critical dependencies?

Write about a 'dependency' you would like to reduce in your life. How would you go about doing that?

よくある質問

10 問

No, you can use the singular 'dependency' if you are referring to just one thing. However, in most professional contexts like project management or software, you are usually dealing with a network of many items, so the plural 'dependencies' is much more common. For example, 'We have one major dependency' vs 'We have several dependencies.'

A circular dependency occurs when two or more things rely on each other in a way that creates a loop. For example, Task A cannot start until Task B is finished, but Task B cannot start until Task A is finished. This is a logical error that prevents progress and must be resolved by changing the plan.

When talking about people, 'dependencies' usually refers to emotional or social reliance. For example, 'The two friends had developed unhealthy emotional dependencies on each other.' If you mean people who rely on you for money, use the word 'dependents' instead. Using 'dependencies' for people can sound a bit cold or technical.

This is a common error message. It means that the software you are trying to run or install needs other files or programs (libraries) that are not currently on your computer. You usually need to download and install those specific files before the software will work correctly.

Internal dependencies are things within your own team or project that you can control. External dependencies are things outside your control, such as a different company delivering parts or a government agency giving approval. External dependencies are usually riskier because you have less influence over them.

Yes, though it is usually a neutral term. In ecology, 'dependencies' describes the beautiful and complex way that plants and animals support each other. In business, 'mutual dependencies' can describe a strong partnership where both companies help each other succeed.

The correct preposition is almost always 'on.' You have a 'dependency on' something. For example, 'Our dependency on electricity is total.' Using 'to' is a common mistake for English learners. Occasionally, you might say 'dependencies between' two things.

A dependency graph is a visual chart that uses boxes (nodes) and arrows to show how different tasks or components are linked. It helps people see the 'big picture' of a project and identify which tasks are the most important for keeping the project on schedule.

The most common mistake is putting an 'a' in the middle. It is spelled with all 'e's: d-e-p-e-n-d-e-n-c-i-e-s. Think of the word 'depend' and then add '-encies' to the end. It follows the same pattern as 'tendencies' or 'frequencies.'

This is a technical term for a way of writing code where you 'give' a program the things it needs rather than having the program find them itself. It makes the code cleaner and easier to test because you can easily swap out the dependencies for different ones during testing.

自分をテスト 200 問

writing

Describe three dependencies you have in your daily morning routine.

Well written! Good try! Check the sample answer below.

正解! おしい! 正解:
writing

Write a professional email explaining why a project is delayed using the word 'dependencies'.

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writing

Explain the difference between 'dependents' and 'dependencies' in your own words.

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writing

Discuss the risks of a country having high economic dependencies on a single export.

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writing

Write a short paragraph about 'dependency hell' in software development.

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writing

How can a manager 'mitigate' dependencies in a project?

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writing

Describe a 'circular dependency' you might encounter in real life.

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writing

What are the dependencies for building a website?

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writing

Write a sentence using 'dependencies' in a social or psychological context.

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writing

Why is it important to 'map out' dependencies before starting a large construction project?

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writing

Discuss the concept of 'path dependency' in history.

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writing

Write a dialogue between two coworkers discussing a 'blocker' caused by a dependency.

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writing

How does technology create new dependencies for modern humans?

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writing

What is the 'dependency ratio' and why does it matter for a country's future?

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writing

Describe a 'mutual dependency' between two different species in nature.

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writing

Write a sentence using 'dependencies' and 'contingencies' together.

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writing

How can a software developer 'manage' their dependencies?

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writing

What are the 'legal dependencies' for starting a new business?

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writing

Write a sentence about 'resource dependencies' in the context of climate change.

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writing

Describe the 'dependencies' of a successful sports team.

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speaking

Explain the concept of dependencies to a 10-year-old using a Lego analogy.

Read this aloud:

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speaking

Describe a time when a 'dependency' caused a problem for you at work or school.

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speaking

Discuss whether you think people today have too many dependencies on their smartphones.

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speaking

How would you explain 'circular dependency' in a business meeting?

Read this aloud:

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speaking

What are the dependencies for a successful vacation?

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speaking

Explain the term 'dependency ratio' to a colleague.

Read this aloud:

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speaking

Talk about 'resource dependencies' in your country.

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speaking

What is 'dependency injection' and why is it useful?

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speaking

How do you 'map out' dependencies for a new project?

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speaking

Discuss the 'emotional dependencies' in a famous movie or book.

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speaking

What are the 'external dependencies' of a small business?

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speaking

Explain 'path dependency' using the example of a city's roads.

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speaking

How can a team 'resolve' a dependency that is causing a delay?

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speaking

What are the 'technical dependencies' for a video call?

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speaking

Discuss the 'mutual dependencies' between a boss and an employee.

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speaking

What is a 'bottleneck' and how do you fix it?

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speaking

How does 'dependency management' help in software engineering?

Read this aloud:

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speaking

Talk about the 'dependencies' of a healthy lifestyle.

Read this aloud:

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speaking

What are 'legal dependencies' in a merger?

Read this aloud:

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speaking

Explain the phrase 'a house of cards' in relation to dependencies.

Read this aloud:

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listening

Listen for the word 'dependencies' in a business podcast. What was the context?

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listening

In a software tutorial, what does the instructor say about 'npm install'?

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listening

Listen to a news report about the economy. What 'dependencies' are mentioned?

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listening

In a project meeting, a coworker says they are 'blocked'. What is the dependency?

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listening

Listen for the stress in the word 'dependencies'. Which syllable is loudest?

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listening

A technician says 'missing dependencies'. What should you do?

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listening

In a lecture on demographics, what does the professor say about the 'dependency ratio'?

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listening

Listen to a discussion about 'codependency'. Is it positive or negative?

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listening

A developer mentions 'circular dependencies'. Why are they worried?

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listening

What is the 'upstream' dependency in the conversation?

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listening

Listen for the word 'prerequisites'. Is it used as a synonym for dependencies?

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listening

What 'external dependencies' does the CEO mention in the speech?

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listening

In a cooking show, what is the dependency for the soufflé?

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listening

Listen for 'path dependency'. What historical example is given?

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listening

What does 'resolving dependencies' mean in the IT support call?

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/ 200 correct

Perfect score!

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