Explanation at your level:
To rely means you need someone or something. You rely on your friends to help you. You rely on a car to go to work. It is like saying 'I trust this to help me.'
When you rely on someone, you trust them to help you. For example, 'I rely on my alarm clock every morning.' It is a very useful word for talking about things you need daily.
Use rely when you need to express dependency. It is common to say 'I rely on my laptop for school.' It shows that something is essential for your success or daily routine.
At this level, you can use rely in more complex structures. 'I have come to rely on his advice.' It implies a growing trust over time. It is a great alternative to 'depend on.'
In academic or professional contexts, rely suggests a foundation. 'The study relies on data from multiple sources.' It indicates that the validity of a conclusion is built upon specific evidence or support systems.
Mastery of rely involves understanding the nuance of 'reliance.' It can describe a psychological state of trust or a structural necessity. In literature, it can even imply a sense of vulnerability, as relying on something means you are exposed if that support is removed.
30秒でわかる単語
- Rely means to trust or need something.
- Always use it with the preposition 'on'.
- It comes from a Latin word meaning 'to bind'.
- It is a versatile, neutral verb.
When you rely on something, you are essentially saying, 'I need this to work.' It is a verb that describes the act of depending on a person, a tool, or even a system to get through your day. Whether you are relying on your alarm clock to wake you up or relying on a friend for honest advice, the core meaning is about trust and necessity.
Think of it as a bridge; if you are standing on a bridge, you are relying on that structure to keep you safe above the water. In daily life, we rely on technology, our families, and our own skills. It is a powerful word because it highlights how interconnected we are with the things and people around us.
The word rely has a fascinating journey through time. It traces its roots back to the Old French word relier, which meant 'to bind, tie, or fasten.' This makes sense when you think about it—when you rely on someone, you are metaphorically 'binding' your success to their support.
Going even further back, it comes from the Latin religare, where re- means 'again' and ligare means 'to bind.' It entered Middle English in the 14th century. Interestingly, the word 'religion' shares this same Latin root, suggesting that the concept of binding oneself to a belief is historically linked to the concept of relying on something for support.
We almost always use rely with the preposition on or upon. You don't just 'rely someone'; you 'rely on someone.' It is a versatile word used in both professional and casual settings. In a business email, you might say, 'I rely on your expertise for this project,' which sounds professional and respectful.
In casual conversation, you might say, 'I rely on coffee to get me through the morning.' The register is neutral, making it easy to use in almost any situation. It is a staple word for describing dependencies, making it essential for clear communication.
- Lean on: To rely on someone for emotional support. 'You can lean on me during this hard time.'
- Count on: A very common synonym. 'I can always count on you to be on time.'
- Bank on: To rely on something happening. 'Don't bank on the rain stopping before noon.'
- Fall back on: To use something as a backup. 'She has her degree to fall back on.'
- Take at one's word: To rely on what someone says is true. 'I took him at his word that he would finish the report.'
Rely is a regular verb. Its past tense is relied, and its present participle is relying. Notice the 'y' changes to 'i' in the past tense! The stress is on the second syllable: re-LY.
Phonetically, it is /rɪˈlaɪ/ in both British and American English. It rhymes with words like apply, supply, defy, deny, and sky. It is almost always followed by the preposition 'on' or 'upon' when it takes an object.
Fun Fact
It shares a root with 'religion', which means to bind together.
Pronunciation Guide
Clear 're' and long 'lie'.
Similar to UK, stress on second syllable.
Common Errors
- Pronouncing 're' as 'ree'
- Forgetting to stress the second syllable
- Adding an extra sound after 'lie'
Rhymes With
Difficulty Rating
Easy to read
Easy to use
Easy to say
Easy to understand
What to Learn Next
Prerequisites
Learn Next
上級
Grammar to Know
Prepositional Verbs
Rely on
Third Person Singular
He relies
Gerunds
Relying on doing
Examples by Level
I rely on my mom.
I trust/need my mom.
Verb + preposition
I rely on this bag.
I use this bag every day.
Object follows 'on'
Do you rely on him?
Do you trust him?
Question form
We rely on water.
We need water.
General truth
They rely on maps.
They use maps to find the way.
Plural subject
I rely on my phone.
My phone is important.
Daily usage
She relies on coffee.
She needs coffee.
Third person singular
He relies on a bike.
He uses a bike to travel.
Verb + preposition
I rely on my brother for help.
Do you rely on the bus?
We rely on the sun for light.
She relies on her notes.
They rely on each other.
I rely on my glasses to read.
He relies on his training.
We rely on our team.
Many people rely on public transport.
I rely on his honest opinion.
The business relies on regular customers.
Don't rely on luck to pass.
She relies on her instincts.
We rely on the internet for news.
They rely on a strict schedule.
I rely on my family's support.
The success of the project relies on your input.
I have come to rely on his steady guidance.
They rely heavily on automated systems.
It is a mistake to rely on outdated information.
The economy relies on tourism.
We cannot rely on his promise alone.
She relies on her past experience.
The plan relies on everyone being present.
The theory relies on the assumption of constant growth.
Modern medicine relies on rigorous testing.
He relies on his wit to survive social gatherings.
The entire argument relies on this single piece of evidence.
The company relies on its reputation for quality.
We must not rely on temporary solutions.
The infrastructure relies on constant maintenance.
Their partnership relies on mutual respect.
The architect relies on structural integrity over aesthetics.
One must not rely solely on intuition in such matters.
The narrative relies on the protagonist's internal monologue.
The ecosystem relies on a delicate balance of species.
He relies on a network of informants for his news.
The legal case relies on the interpretation of the statute.
The artist relies on light to define the space.
The system relies on the cooperation of all parties.
よく使う組み合わせ
Idioms & Expressions
"Lean on someone"
To depend on someone for support.
It's okay to lean on your friends.
casual"Count on someone"
To rely on someone to do something.
Can I count on you to be there?
neutral"Bank on something"
To rely on an expected outcome.
Don't bank on the promotion yet.
casual"Fall back on"
To use something as a backup plan.
He has his savings to fall back on.
neutral"Take for granted"
To rely on something without appreciating it.
We take clean water for granted.
neutral"Bet your bottom dollar"
To be so sure you rely on it.
You can bet your bottom dollar he'll be late.
casualEasily Confused
Learners forget the preposition.
Rely is incomplete without on.
I rely on him.
They mean the same thing.
Depend is slightly more common.
I depend on you.
Adjective vs. Adverb.
Reliable describes a person; reliably describes an action.
He is reliable; he works reliably.
Noun usage.
Usually followed by 'on'.
My reliance on coffee.
Sentence Patterns
Subject + rely on + noun
I rely on my car.
Subject + rely on + gerund
I rely on waking up early.
Subject + rely on + someone + to + verb
I rely on him to help.
It + relies on + noun
It relies on good weather.
Subject + can rely on + noun
You can rely on me.
語族
Nouns
Verbs
Adjectives
関連
How to Use It
8/10
Formality Scale
よくある間違い
Rely always needs the preposition 'on'.
It is not 'rely to', always use 'on'.
Do not add 'to' before the object.
Third person singular needs an 's'.
Do not use 'am' with a main verb.
Tips
Memory Palace Trick
Imagine a 're-lie' (telling a lie again) and realize you can't rely on a liar.
When Native Speakers Use It
Use it when you need to explain why something is important to you.
Cultural Insight
It implies a sense of responsibility in relationships.
Grammar Shortcut
Rely + on = inseparable pair.
Say It Right
Make sure the 'ly' sounds like 'sky'.
Don't Make This Mistake
Never use 'to' after rely.
Did You Know?
It has roots in the same word family as 'religion'.
Study Smart
Learn it with 'depend on' as a synonym.
Professional Tip
Use 'rely' in cover letters to show you are a team player.
Pattern Check
Rely + on + noun/gerund.
Memorize It
Mnemonic
RE-LIE: If you have to re-lie on someone, you trust them again.
Visual Association
A person leaning against a sturdy wall.
Word Web
チャレンジ
Write three things you rely on every single day.
語源
Old French / Latin
Original meaning: To bind or tie back
文化的な背景
None, generally a positive or neutral word.
Used in professional settings to emphasize trust and in personal settings to show closeness.
Practice in Real Life
Real-World Contexts
At work
- Rely on data
- Rely on team
- Rely on feedback
At school
- Rely on notes
- Rely on teachers
- Rely on textbooks
Daily life
- Rely on alarm
- Rely on phone
- Rely on friends
Travel
- Rely on maps
- Rely on GPS
- Rely on schedules
Conversation Starters
"Who do you rely on the most?"
"Do you rely on technology too much?"
"What is one thing you rely on every day?"
"Is it easy for you to rely on others?"
"Why do people rely on their habits?"
Journal Prompts
Write about a person you rely on and why.
Describe a tool you rely on to get your work done.
Is it better to rely on yourself or on others?
How does your daily routine rely on specific systems?
よくある質問
8 問Always rely on.
No, it needs the preposition.
It is neutral and fits most contexts.
Reliance.
Reliable.
rɪ-LY.
Yes, relied, relying.
No, that is grammatically incorrect.
自分をテスト
I ___ on my alarm clock.
Subject 'I' takes the base form.
Which sentence is correct?
Rely needs 'on'.
Rely is a noun.
Rely is a verb.
Word
意味
Synonym matching.
Subject-verb-prep-object.
The project ___ on his expertise.
Third person singular.
What does 'rely heavily' mean?
Heavily implies high dependency.
You can say 'rely to someone'.
Always 'on'.
The theory ___ on outdated data.
Present tense for facts.
Word
意味
Nuance check.
スコア： /10
Summary
To rely on someone is to trust them as a necessary part of your success.
- Rely means to trust or need something.
- Always use it with the preposition 'on'.
- It comes from a Latin word meaning 'to bind'.
- It is a versatile, neutral verb.
Memory Palace Trick
Imagine a 're-lie' (telling a lie again) and realize you can't rely on a liar.
When Native Speakers Use It
Use it when you need to explain why something is important to you.
Cultural Insight
It implies a sense of responsibility in relationships.
Grammar Shortcut
Rely + on = inseparable pair.
例文
I rely on my GPS to find new places in the city.
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