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C2 noun #1,200 most common 18 min read

security

Top 1,200

Practice it Examples Notes & Tips security in 30 Seconds

Explanation security in your Level:

At the A1 level, 'security' is a word you might hear at the airport or in a big building. It usually means the people whose job is to keep a place safe. You might see a 'security guard' wearing a uniform. They check bags or look at ID cards. You can think of security as 'safety' in a public place. For example, 'The security guard is at the door.' It is a simple idea of someone watching and protecting. You might also hear it in the phrase 'security camera,' which is a camera that watches a shop or a street to stop people from stealing. At this level, just remember that security is about being safe and the people who help us stay safe in buildings or at the airport. It is a noun, and we use it to talk about things that protect us. You don't need to worry about the difficult meanings yet. Just think of a person in a uniform or a camera on the wall. When you go to a new country, you go through 'security' at the airport. This is the place where they check your passport and your bags. It is a very important word for travelers. If you feel safe at home, you have a feeling of security. It is a good and important word to know because it helps you understand who to talk to if you need help in a public place. Always look for the 'security' sign if you are lost in a big mall or station.

At the A2 level, you start to use 'security' in more specific ways. You know about 'security guards' and 'security cameras,' but now you might also learn about 'security codes' or 'passwords.' When you use a computer or a phone, you need security to keep your information private. You might say, 'I need to change my security password.' You also hear about 'security' in terms of money, like a 'security deposit.' This is the money you give to a landlord when you rent a room. It is to make sure you don't break anything. If you are a good tenant, you get the money back. So, security here means a 'guarantee.' You might also talk about 'job security.' This means having a job that you know will last for a long time. If you have job security, you are not worried about losing your job tomorrow. This is a very common phrase in work life. At this level, you should also know that 'security' is often a department in a company. If you lose your keys at work, you might go to the 'Security Department.' You are moving from just seeing a guard to understanding that security is a system of rules and money that keeps things stable. It is still mostly about being safe, but it includes your money and your job too. You can use it as a noun to describe many different types of protection. For example, 'The airport security was very fast today.' or 'I want a job with good security.'

At the B1 level, you understand that 'security' is a broad concept that covers physical, digital, and financial safety. You can use it to talk about 'national security,' which is how a country protects itself from other countries or from crime. You might read in the news that 'The government is worried about national security.' You also become more familiar with 'cybersecurity.' This is a big word for protecting computers and the internet. You might say, 'We need better security for our website.' In B1, you also start to use the word to describe feelings. A 'sense of security' is the feeling of being safe and happy. For example, 'Living in a quiet neighborhood gives me a sense of security.' You can also use it in more complex financial ways. You might hear about 'Social Security,' which is a system where the government gives money to people who are old or cannot work. This is a very important part of life in many English-speaking countries. You are also learning that 'security' can be used as a modifier for many other nouns: security alert, security breach, security measures, security policy. You should be able to explain why security is important in different parts of life. For example, 'Security is important at banks because they have a lot of money.' or 'I feel a lack of security when I travel alone at night.' You are starting to see that security is not just about guards, but about feeling certain and protected in many ways.

At the B2 level, you should be able to distinguish between 'security' and 'safety' clearly. You know that security is about intentional threats, while safety is about accidents. You can participate in discussions about 'security protocols' and 'security clearances.' For instance, if you work for the government, you might need a 'security clearance' to see secret documents. This shows a higher level of trust. You also understand the financial meaning of 'securities' (plural). You know that this refers to stocks and bonds. An investor might say, 'I am buying government securities because they are safe.' This is a very different meaning from 'security guards.' You can also use the word in more abstract ways, like 'food security' or 'energy security.' These terms mean that a country has enough food or electricity for everyone. You can use the word to talk about complex social issues. For example, 'The lack of job security in the gig economy is a major concern for young workers.' You are also comfortable with the word in legal contexts, like 'security for a loan.' This means you give the bank something valuable (like your house) so they know you will pay them back. At B2, your vocabulary is rich enough to use 'security' in professional, academic, and social settings with confidence. You understand that it is a systemic concept involving technology, law, and human behavior. You can describe a 'security breach' in detail and suggest 'security measures' to fix it.

At the C1 level, you use 'security' with nuance and precision. You understand its role in psychological theories, such as 'attachment security' in children and adults. You can discuss how a 'secure base' allows individuals to take risks and grow. You are also aware of the word's use in international relations, such as the 'Security Council' of the United Nations or the concept of 'collective security.' You can analyze the 'security-liberty trade-off,' which is the balance between being safe and having personal freedom. This is a common topic in advanced essays and debates. You also understand the technicalities of 'securities law' and how 'market security' affects the global economy. You can use the word as a sophisticated metaphor or in idiomatic expressions. For example, you might talk about 'ontological security,' which is a person's sense of their own identity and the consistency of the world around them. Your use of the word is no longer just about 'being safe'; it is about the structural and emotional foundations of society. You can use collocations like 'tighten security,' 'breach security,' 'compromise security,' and 'undermine security' with perfect accuracy. You also know that 'security' can be a collective noun for the people who provide it, as in 'Security was called to the scene.' You can navigate the subtle differences between 'security,' 'protection,' 'safeguarding,' and 'assurance' in professional documents. Your writing and speaking show that you understand security as a multi-layered, essential, and sometimes controversial aspect of modern life.

At the C2 level, you have a masterly command of 'security' in all its forms. You can discuss the 'securitization' of assets in finance, a complex process of turning debts into tradable securities. You understand the 'securitization' of political issues, where a topic is framed as an existential threat to justify extraordinary measures. You can engage in high-level academic debates about 'human security' versus 'state security,' arguing how the focus has shifted from borders to individual well-being. You are familiar with the 'security dilemma' in political science, where one country's defense makes others feel threatened. Your vocabulary includes highly specialized terms like 'cybersecurity architecture,' 'biometric security,' and 'maritime security.' You can use the word with rhetorical flair in speeches or formal writing. For example, 'The erosion of social security is a harbinger of deeper systemic instability.' You understand the legal nuances of 'perfecting a security interest' in commercial law. You can also appreciate the word's role in literature and philosophy, discussing how the pursuit of security can sometimes lead to the loss of vitality or freedom. At this level, 'security' is not just a word but a conceptual tool you use to analyze the world. You can move seamlessly between its financial, psychological, legal, and physical meanings without any hesitation. Your use of the word is indistinguishable from that of a highly educated native speaker, reflecting a deep understanding of the historical, cultural, and technical contexts that shape its meaning.

Practice it Examples Notes & Tips

security in 30 Seconds

Security refers to the state of being safe from harm, including physical, digital, and financial protection.
It can describe a person (security guard), a system (security protocol), or a feeling (sense of security).
In finance, 'securities' are tradable assets like stocks and bonds used for investment.
The word is essential in contexts ranging from airport travel to international politics and psychology.

The word security is a multifaceted noun that functions as a cornerstone of modern society, encompassing everything from personal safety to global finance. At its most fundamental level, security refers to the state of being free from danger, threat, or fear. However, as one moves into higher levels of English proficiency, the word reveals layers of complexity that touch upon psychology, law, technology, and economics. In everyday conversation, we might use it to describe the feeling of being safe at home or the physical presence of guards at a concert. In a professional or academic setting, it shifts toward the systems and protocols designed to protect information or the stability of a nation's borders. The beauty of the word lies in its ability to describe both an internal emotional state and an external, tangible system of protection. Whether you are discussing the security of a digital password or the emotional security provided by a loving family, the core concept remains the same: the mitigation of risk and the establishment of certainty.

Physical Protection: This refers to the measures taken to guard against theft, assault, or unauthorized entry. For example, 'The building has high-level security including cameras and biometric scanners.' Here, security is a collective noun for the tools and people providing protection.
Financial Stability: In economic terms, security often refers to the assurance of having enough money to live comfortably without fear of poverty. 'Job security' is a common phrase meaning the probability that an individual will keep their job. Additionally, in the plural form 'securities,' it refers to tradable financial assets like stocks and bonds.

The government increased national security measures following the intelligence report regarding potential cyber threats to the power grid.

In the digital age, the term has become synonymous with 'cybersecurity.' This involves protecting networks, devices, and data from unauthorized access or criminal use. When people talk about 'changing their security settings,' they are referring to the privacy and protection controls on their social media or banking apps. This usage highlights the transition of the word from the physical realm to the virtual one. Furthermore, in psychological contexts, security is linked to 'attachment theory,' where a 'secure attachment' allows a child or adult to feel confident in their relationships. This internal sense of security is vital for mental health and resilience. The word is also used in legal contexts, such as a 'security deposit'—money paid in advance to protect a landlord against potential damage to a property. This variety of uses makes 'security' one of the most versatile and essential words in the English language, appearing in news headlines, legal contracts, and personal reflections alike.

Investors are diversifying their portfolios by purchasing a variety of government securities to mitigate the risks of market volatility.

Psychological Well-being: The internal feeling of confidence and lack of anxiety. A child needs a sense of security to explore the world. Without it, they may develop insecurities that affect their adult relationships and self-esteem.

After years of moving from city to city, she finally found a sense of security in her small hometown community.

When discussing international relations, 'collective security' refers to a system where states cooperate to provide mutual protection. This is the foundation of organizations like the United Nations or NATO. In this context, security is not just about one nation’s borders but about a shared global stability. The word carries a weight of authority and necessity; when something is labeled a 'security issue,' it is immediately prioritized. This linguistic power is used by politicians and corporate leaders to justify expenditures and policy changes. Whether it is 'food security' (ensuring everyone has access to nutrition) or 'energy security' (ensuring a steady supply of power), the word acts as a prefix for essential human needs. Understanding the nuances of security allows a learner to navigate complex discussions about politics, finance, and personal safety with precision and confidence.

The IT department implemented a new security protocol to prevent data breaches and unauthorized access to the server.

Legal Collateral: Something deposited or pledged as a guarantee of the fulfillment of an undertaking or the repayment of a loan, to be forfeited in case of default. 'He used his house as security for the bank loan.'

The landlord requested a two-month security deposit before the tenants could move into the apartment.

Using the word security correctly requires an understanding of its grammatical flexibility. It can function as an uncountable noun, a countable noun (in specific contexts), and frequently as an attributive noun (acting like an adjective). When you are talking about the general concept of being safe, it is uncountable. For example, 'We all seek security in our lives.' You do not say 'a security' in this general sense. However, when you are talking about financial instruments, it is countable: 'The broker sold various securities on the stock exchange.' This distinction is vital for C2-level precision. Furthermore, 'security' often modifies other nouns to create compound terms that are ubiquitous in professional English, such as 'security guard,' 'security camera,' 'security breach,' and 'security clearance.'

As an Uncountable Noun: Used for the general state of safety or the department responsible for it. 'Security is tight at the airport.' 'The feeling of security she felt in her home was unparalleled.'
As a Countable Noun (Plural: Securities): Specifically used in finance to refer to stocks, bonds, or other tradable assets. 'The SEC (Securities and Exchange Commission) regulates the trading of securities in the United States.'

The company's security infrastructure was overhauled to include end-to-end encryption for all internal communications.

In sentence construction, 'security' often follows verbs like 'provide,' 'ensure,' 'maintain,' 'tighten,' or 'breach.' For instance, 'The new law aims to provide greater security for online shoppers.' Or, 'Hackers managed to breach the security of the government database.' Notice how the word 'security' acts as the object of the action. When used as a modifier, it precedes the noun it describes: 'security measures,' 'security personnel,' 'security system.' This is one of the most common ways you will encounter the word in news reports and business documents. It is also important to note the prepositional use: 'security against' something (e.g., 'security against theft') or 'security for' something (e.g., 'security for a loan'). These prepositions help define the relationship between the protection and the threat or the asset.

Having a high-level security clearance is a prerequisite for anyone applying for a position within the intelligence agency.

The 'Sense of Security' Phrasing: This common phrase describes the psychological feeling rather than the physical reality. 'The presence of a dog gave the elderly woman a sense of security, even though the dog was quite small.'

The bank requires the borrower to provide some form of security, such as a property deed, before approving the large commercial loan.

Advanced learners should also be aware of the word in passive constructions. 'Security was heightened following the incident.' This is a formal way to describe an increase in protective measures without necessarily identifying who did the heightening. In academic writing, 'security' is often linked with abstract concepts like 'human security' or 'ontological security.' These terms require a deep understanding of the context. For example, 'ontological security' refers to a person's sense of continuity and order in their life. Using 'security' in these ways demonstrates a sophisticated command of English, moving beyond the simple 'security guard' definition. Always consider whether you are referring to the *state* of being secure, the *measures* taken to be secure, or the *assets* used to guarantee security. Each context dictates a slightly different grammatical and collocated approach.

Cybersecurity experts warn that the weakest link in any security system is often human error rather than technical failure.

Compound Nouns with Security: Security risk, security alert, security camera, security gate, security officer, security policy, security software, security threat.

The diplomat's security detail was comprised of highly trained former special forces operators.

The word security is ubiquitous, echoing through the halls of government buildings, the trading floors of Wall Street, and the everyday notifications on our smartphones. One of the most common places you will hear it is at the airport. The phrase 'going through security' is a standard part of modern travel vocabulary, referring to the checkpoint where passengers and luggage are screened. In this context, 'security' is both a location and a process. Similarly, in any large corporate office or gated community, you will encounter 'security personnel' or 'the security desk.' Here, the word is synonymous with the people hired to monitor access and ensure the safety of the occupants. It is a word of authority; when someone says, 'I'll call security,' it implies a formal intervention to resolve a conflict or remove a threat.

In the News: News broadcasts frequently use 'security' in the context of 'national security' or 'global security.' Journalists discuss 'security breaches' in government agencies or 'security threats' from foreign actors. It is a high-stakes word used to convey the seriousness of a situation.
In Financial Reports: Listen to any financial podcast or read a market summary, and you will hear about 'securities.' Analysts might say, 'The market for fixed-income securities is currently volatile.' In this domain, the word is purely technical and refers to investment vehicles.

Passengers are reminded not to leave their bags unattended and to report any suspicious activity to airport security immediately.

In the tech world, 'security' is a daily topic. Software developers talk about 'security patches' and 'security vulnerabilities.' When you log into a website, you might be asked to 'update your security questions' or enable 'two-factor security.' In these instances, the word refers to the digital safeguards protecting your identity and data. It is also a major industry; 'cybersecurity' is one of the fastest-growing job sectors. Beyond the professional realm, you hear the word in social and psychological discussions. People talk about 'financial security' as a life goal, or 'job security' during economic downturns. In these cases, the word is used to describe a sense of stability and the absence of worry. It is a deeply human word that touches on our most basic needs for safety and predictability.

The latest security update for the operating system fixes a critical flaw that could allow hackers to take control of the device.

In Legal and Real Estate: If you are renting an apartment, you will hear about the 'security deposit.' In legal disputes, a lawyer might talk about 'security for costs,' which is money paid into court to ensure that a defendant's legal fees will be covered if they win.

The United Nations Security Council met today to discuss the escalating conflict and the potential for a peacekeeping mission.

Finally, the word appears in the titles of many organizations and roles. The 'Security Council' of the UN, the 'Homeland Security' department in the US, and the 'Chief Information Security Officer' (CISO) in a corporation. These titles reflect the high priority placed on the concept. Even in casual settings, like a bar or club, you might hear someone mention 'the security' at the door, referring to the bouncers. The word's reach is so broad that it is almost impossible to go a day without hearing it or seeing it in print. Whether it is a warning, a job title, a financial asset, or a psychological state, 'security' is a fundamental part of the modern English lexicon, signaling a focus on protection, stability, and the prevention of harm.

The feeling of security provided by a steady income is often cited as the primary reason people choose corporate jobs over freelancing.

In Academic Discourse: Scholars in international relations discuss 'the security dilemma,' where one state's attempt to increase its security causes other states to feel less secure, leading to an arms race.

The IT consultant recommended a multi-layered security approach to protect the firm's intellectual property from industrial espionage.

One of the most frequent mistakes learners make is confusing security with 'safety.' While they are related, they are not interchangeable. 'Safety' generally refers to protection against accidental harm or injury (e.g., wearing a helmet for safety). 'Security' refers to protection against intentional harm, such as theft, hacking, or terrorism. You wouldn't say 'airport safety' when you mean the checks for weapons; you say 'airport security.' Conversely, you wouldn't say 'food security' when you mean that the food isn't poisonous; 'food safety' refers to hygiene, while 'food security' refers to having enough food to eat. Understanding this distinction is a hallmark of an advanced speaker. Another common error involves the pluralization of the word. Learners often use 'securities' when they mean 'security measures' or 'feelings of security.' Remember, 'securities' is almost exclusively used for financial assets like stocks.

Security vs. Safety: Mistake: 'I wear a seatbelt for my security.' Correct: 'I wear a seatbelt for my safety.' Mistake: 'The bank has good safety.' Correct: 'The bank has good security.' Safety is about accidents; security is about threats.
Incorrect Pluralization: Mistake: 'The company needs to improve its digital securities.' Correct: 'The company needs to improve its digital security.' Use the singular 'security' for the concept or system. Use 'securities' only for financial investments.

Many people mistakenly use the term 'security' when they are actually referring to 'safety' protocols in a manufacturing plant.

Another subtle mistake is the misuse of 'security' versus 'insecurity.' While 'security' is the state of being safe, 'insecurity' is the state of being anxious or lacking confidence. However, you cannot always just add 'in-' to the front. For example, you can have 'financial security,' but 'financial insecurity' is the lack of it. In psychological terms, a person has 'insecurities' (plural), but they don't usually have 'securities' (plural) in their personality. You would say they have 'a sense of security.' Furthermore, learners sometimes struggle with the word 'secure' (the adjective/verb) versus 'security' (the noun). You 'secure' a door (verb), and then the door provides 'security' (noun). You feel 'secure' (adjective) because of the 'security' (noun) in place. Mixing these up can lead to awkward sentences like 'The security door was very security.'

It is a common error to refer to 'cyber safety' when discussing protection against hackers; the correct term is 'cyber security'.

Preposition Errors: Mistake: 'Security from the building.' Correct: 'Security for the building' or 'Security of the building.' Use 'against' for threats: 'Security against hackers.'

The student was confused between 'social security' as a government program and 'social safety' as a general concept of community care.

Finally, watch out for the 'security' vs. 'protection' overlap. While they are synonyms, 'security' often implies a more organized, systemic approach. You might have 'protection' from the rain (an umbrella), but you have 'security' from intruders (an alarm system). Using 'security' for simple physical barriers against nature sounds unnatural. Also, in the context of loans, 'security' is the asset itself, not the act of protecting. If you say 'I gave the bank my car for security,' it means the car is the collateral. If you say 'I gave the bank my car for protection,' it sounds like you are worried someone will steal your car and the bank is a safe place to hide it. These nuances are what separate a fluent speaker from a proficient one. Paying attention to the specific domain—finance, IT, physical safety, or psychology—will help you avoid these common pitfalls.

The confusion between 'job security' and 'workplace safety' often leads to misunderstandings in employment contracts.

Misusing 'Security' as a Verb: Mistake: 'We need to security the perimeter.' Correct: 'We need to secure the perimeter.' Security is the noun; secure is the verb.

Using 'securities' to describe a feeling of being safe is a grammatical error; one should use 'a sense of security' instead.

While security is a powerful and versatile word, there are several synonyms and related terms that can provide more specific meaning depending on the context. Understanding these alternatives allows for more precise communication. For instance, 'safety' is the most common alternative, but as discussed, it focuses on accidents. 'Protection' is another broad term that can often replace security, but it feels less formal and less systemic. In a financial context, 'collateral' is a more specific word for the 'security' given for a loan. In the realm of psychology, 'stability' or 'certainty' might be better choices to describe a person's state of mind. By choosing the right word, you can convey subtle differences in meaning that 'security' might gloss over.

Security vs. Safety: Security implies protection against deliberate threats (crime, hacking). Safety implies protection against unintentional harm (accidents, natural disasters). Use 'security' for a bank and 'safety' for a construction site.
Security vs. Protection: Protection is the act of keeping something safe. Security is the state of being protected or the system that provides it. 'The vaccine offers protection against the virus.' 'The guard provides security for the building.'

While security focuses on the systems of defense, 'safeguarding' is often used in social work to describe the protection of vulnerable individuals.

In more technical or formal settings, you might encounter 'assurance' or 'guarantee.' In IT, 'information assurance' is a broader term than 'information security,' encompassing the reliability and usability of data as well as its protection. In finance, 'collateral' is the specific asset pledged, while 'security' is the general term for the arrangement. If you are talking about a nation's defense, 'sovereignty' or 'territorial integrity' are related but more specialized terms. In personal relationships, 'trust' and 'reliability' are the building blocks of what we call 'emotional security.' Using these alternatives not only avoids repetition but also shows a deeper understanding of the subject matter. For example, saying 'The treaty ensures the territorial integrity of the nation' is much more sophisticated than saying 'The treaty provides security for the country.'

The term 'collateral' is a precise financial alternative to security when discussing the assets backed by a mortgage.

Security vs. Stability: Stability refers to the quality of being unlikely to change or fail. Security is the protection that leads to that stability. 'Economic stability' is the goal; 'financial security' is the means for an individual to achieve it.

In the context of software, 'robustness' is often discussed alongside security to describe a system's ability to handle errors and attacks.

When looking for antonyms, 'insecurity' is the most direct, but 'vulnerability,' 'risk,' 'danger,' and 'instability' are all excellent choices depending on the context. A 'security breach' is a 'vulnerability' that has been exploited. A 'lack of security' is a 'risk.' By mapping out these related words, you create a semantic web that makes your English more fluid and natural. For instance, instead of saying 'The security was bad,' you could say 'The system was riddled with vulnerabilities,' or 'The situation was fraught with risk.' These choices provide more color and detail. Whether you are writing a formal report or having a deep conversation, having a toolkit of alternatives to 'security' will make you a more effective communicator. Always ask yourself: Am I talking about the *feeling*, the *system*, the *asset*, or the *absence of danger*? The answer will guide you to the best word.

The diplomat emphasized that 'regional security' is inextricably linked to the 'economic prosperity' of the neighboring states.

Security vs. Surveillance: Surveillance is the act of watching. Security is the goal of that watching. 'The high level of surveillance in the city is intended to improve public security, though it raises privacy concerns.'

The company's 'risk management' strategy includes both physical security and financial hedging against market fluctuations.

How Formal Is It?

Formal

Neutral

Informal

Child friendly

Slang

Fun Fact

In the 16th century, 'security' was often used to mean 'over-confidence' or 'carelessness'—the exact opposite of its modern protective meaning!

Pronunciation Guide

UK /sɪˈkjʊə.rə.ti/

US /səˈkjʊr.ə.t̬i/

The primary stress is on the second syllable: se-CUR-i-ty.

Rhymes With

Maturity Purity Obscurity Impurity Endurity Futurity Surety Insecurity

Common Errors

Pronouncing the 'u' as a flat 'oo' instead of 'you'.
Putting the stress on the first syllable (SE-curity).
Over-emphasizing the 't' in American English (it should be a flap t).
Confusing the pronunciation with 'secret' (SEE-kret).
Dropping the 'r' sound entirely in American English.

Difficulty Rating

Reading 3/5

Common in news and business, but abstract meanings can be tricky.

Writing 4/5

Requires careful use of collocations and understanding of countability.

Speaking 2/5

Very common word, easy to use in basic contexts.

Listening 2/5

Clear pronunciation, though 'flap t' in US English can be fast.

What to Learn Next

Prerequisites

Safe Safety Guard Protect Danger

Learn Next

Surveillance Vulnerability Precaution Collateral Sovereignty

Advanced

Ontological Securitization Adversarial Mitigation Resilience

Grammar to Know

Uncountable vs. Countable

I seek security (uncountable). I bought three securities (countable - finance).

Attributive Nouns

Security guard, security camera (security acts like an adjective).

Prepositional Phrases

Security against theft; security for a loan.

Metonymy

'Security' can refer to the people: 'Security is on the way.'

Compound Word Stress

In 'security guard', the stress remains on the second syllable of 'security'.

Examples by Level

The security guard is standing at the entrance of the mall.

Le garde de sécurité se tient à l'entrée du centre commercial.

Here, 'security' is used as a modifier for the noun 'guard'.

We need to go through security at the airport.

Nous devons passer par la sécurité à l'aéroport.

'Security' is an uncountable noun referring to the checkpoint.

There is a security camera in the shop.

Il y a une caméra de sécurité dans le magasin.

Compound noun: security + camera.

Please show your ID to the security officer.

Veuillez montrer votre pièce d'identité à l'agent de sécurité.

'Security officer' is a more formal term than 'security guard'.

The hotel has good security.

L'hôtel a une bonne sécurité.

Uncountable noun used to describe the general state of safety.

I feel a sense of security at home.

Je ressens un sentiment de sécurité à la maison.

The phrase 'sense of security' describes a feeling.

The security light turns on when you walk past.

La lumière de sécurité s'allume quand vous passez devant.

'Security' modifies 'light' to show its purpose.

Call security if you see a problem.

Appelez la sécurité si vous voyez un problème.

'Security' here refers to the department or the people.

You must enter your security code to open the door.

Vous devez entrer votre code de sécurité pour ouvrir la porte.

'Security code' is a common compound noun.

The landlord asked for a security deposit of $500.

Le propriétaire a demandé un dépôt de garantie de 500 $.

'Security deposit' is a fixed term in real estate.

Job security is very important for my family.

La sécurité de l'emploi est très importante pour ma famille.

'Job security' means the stability of one's employment.

Check your computer's security settings regularly.

Vérifiez régulièrement les paramètres de sécurité de votre ordinateur.

Possessive form: 'computer's security settings'.

The bank has very tight security.

La banque a une sécurité très stricte.

The adjective 'tight' is often used with 'security'.

He works in the security department of a large company.

Il travaille dans le département de sécurité d'une grande entreprise.

'Security department' is the specific office for safety.

The security alarm went off in the middle of the night.

L'alarme de sécurité s'est déclenchée au milieu de la nuit.

The phrasal verb 'go off' means to start ringing.

They added more security to the building last month.

Ils ont ajouté plus de sécurité au bâtiment le mois dernier.

'Security' here refers to measures or equipment.

The government is taking steps to improve national security.

Le gouvernement prend des mesures pour améliorer la sécurité nationale.

'National security' refers to the protection of a whole country.

Cybersecurity is a major concern for modern businesses.

La cybersécurité est une préoccupation majeure pour les entreprises modernes.

'Cybersecurity' is a compound word often used as a synonym for digital security.

The social security system provides help for the elderly.

Le système de sécurité sociale aide les personnes âgées.

'Social security' is a specific government program.

There was a security breach at the credit card company.

Il y a eu une faille de sécurité dans la société de cartes de crédit.

A 'breach' is a gap or a failure in security.

She used her house as security for the bank loan.

Elle a utilisé sa maison comme garantie pour le prêt bancaire.

'Security' here means collateral or a guarantee.

The new software includes several security features.

Le nouveau logiciel comprend plusieurs fonctions de sécurité.

'Security features' are the specific tools within a product.

The event was cancelled due to security reasons.

L'événement a été annulé pour des raisons de sécurité.

'Security reasons' is a common formal phrase.

Tightening security at the border is a priority.

Renforcer la sécurité à la frontière est une priorité.

The gerund 'tightening' acts as the subject of the sentence.

The investor's portfolio includes a variety of government securities.

Le portefeuille de l'investisseur comprend une variété de titres gouvernementaux.

Plural 'securities' refers to financial assets.

He was granted a high-level security clearance for his new job.

Il a obtenu une habilitation de sécurité de haut niveau pour son nouvel emploi.

'Security clearance' is the official permission to access secret info.

The company implemented a new security protocol for data handling.

L'entreprise a mis en œuvre un nouveau protocole de sécurité pour le traitement des données.

A 'protocol' is a set of rules or procedures.

Food security is a critical issue in many developing nations.

La sécurité alimentaire est un problème critique dans de nombreux pays en développement.

'Food security' means having reliable access to enough food.

The security of the network was compromised by a phishing attack.

La sécurité du réseau a été compromise par une attaque de phishing.

The verb 'compromise' means to weaken or damage.

They are seeking to enhance maritime security in the region.

Ils cherchent à renforcer la sécurité maritime dans la région.

'Maritime security' refers to safety at sea.

The presence of police provided a sense of security during the protest.

La présence de la police a procuré un sentiment de sécurité pendant la manifestation.

'Sense of security' is a psychological state.

The security detail for the president was increased.

Le service de sécurité du président a été renforcé.

A 'security detail' is a group of people assigned to protect someone.

The UN Security Council voted on the resolution regarding the ceasefire.

Le Conseil de sécurité de l'ONU a voté sur la résolution concernant le cessez-le-feu.

Proper noun: 'Security Council'.

Ontological security is essential for an individual's mental well-being.

La sécurité ontologique est essentielle au bien-être mental d'un individu.

'Ontological security' is a psychological and sociological term.

The trade-off between security and privacy is a central theme in the debate.

Le compromis entre sécurité et vie privée est un thème central du débat.

'Trade-off' describes the balance between two competing needs.

The securitization of the border has led to increased tensions.

La sécurisation de la frontière a entraîné une augmentation des tensions.

'Securitization' is the process of making something a security issue.

The firm specializes in the management of distressed securities.

La société se spécialise dans la gestion de titres en difficulté.

'Distressed securities' are assets from companies near bankruptcy.

A secure attachment in childhood fosters emotional security in adulthood.

Un attachement sécure dans l'enfance favorise la sécurité émotionnelle à l'âge adulte.

The adjective 'secure' and the noun 'security' are used together.

The security of the supply chain is vital for the global economy.

La sécurité de la chaîne d'approvisionnement est vitale pour l'économie mondiale.

'Supply chain security' is a professional logistical term.

The legislation aims to bolster energy security by investing in renewables.

La législation vise à renforcer la sécurité énergétique en investissant dans les énergies renouvelables.

The verb 'bolster' means to support or strengthen.

The securitization of subprime mortgages was a key factor in the financial crisis.

La titrisation des prêts hypothécaires à risque a été un facteur clé de la crise financière.

'Securitization' here refers to the financial process of creating securities.

Realist theory posits that states are primarily motivated by the quest for security.

La théorie réaliste postule que les États sont principalement motivés par la quête de sécurité.

Academic use in the context of political science.

The security dilemma often results in an unintended and costly arms race.

Le dilemme de la sécurité entraîne souvent une course aux armements involontaire et coûteuse.

A specific term in international relations theory.

The court examined whether the lender had perfected its security interest.

Le tribunal a examiné si le prêteur avait perfectionné sa sûreté.

'Security interest' is a legal right in an asset to secure a debt.

Human security transcends traditional notions of state sovereignty.

La sécurité humaine transcende les notions traditionnelles de souveraineté étatique.

'Human security' focuses on individuals rather than borders.

The pervasive surveillance state has fundamentally altered our sense of security.

L'État de surveillance omniprésent a fondamentalement altéré notre sentiment de sécurité.

'Pervasive' means spreading widely throughout an area.

The volatility of emerging market securities poses a risk to global stability.

La volatilité des titres des marchés émergents pose un risque pour la stabilité mondiale.

'Emerging market securities' is a technical financial term.

The diplomat argued that collective security is the only path to lasting peace.

Le diplomate a soutenu que la sécurité collective est la seule voie vers une paix durable.

'Collective security' refers to mutual protection between states.

Synonyms

protection safety stability assurance collateral defense

Antonyms

insecurity vulnerability danger

Common Collocations

Tighten security

Breach of security

National security

Job security

Security clearance

Security deposit

Security measures

Cyber security

Sense of security

Security guard

Common Phrases

Go through security

— To pass through a checkpoint where you and your belongings are checked for safety.

We had to go through security three times during our trip.

Call security

— To ask for the help of guards or police to handle a situation.

The manager had to call security to remove the angry customer.

For security reasons

— A formal explanation for a rule or action intended to keep people safe.

The flight was delayed for security reasons.

Security alert

— A warning that there is a potential threat or danger.

The airport was placed on high security alert.

Social security

— A government system that provides financial assistance to people with little or no income.

He relies on his social security check every month.

Security system

— A set of devices (alarms, cameras) used to protect a building.

They installed a high-tech security system in their new house.

Security breach

— An incident where a security system is failed or bypassed.

The security breach exposed the personal data of millions.

Maximum security

— The highest level of protection, often used for prisons.

The criminal was sent to a maximum security prison.

Security policy

— A set of rules that an organization follows to ensure safety.

The company's security policy prohibits the use of USB drives.

Security check

— A process of verifying that someone or something is safe.

The guards performed a routine security check of the premises.

Often Confused With

security vs Safety

Safety is about accidents; security is about intentional harm.

security vs Surety

Surety is a legal term for a person who takes responsibility for another's debt.

security vs Protection

Protection is the act; security is the state or the system.

Idioms & Expressions

"False sense of security"

— A feeling of being safe when you are actually in danger.

The calm weather gave the sailors a false sense of security.

Neutral

"Lull someone into a false sense of security"

— To make someone feel safe so they stop being careful, often to trick them.

The scammer tried to lull the victim into a false sense of security.

Neutral

"Security blanket"

— Something that provides a person with a sense of comfort and safety, often unnecessarily.

For many people, their smartphone has become a digital security blanket.

Informal

"Tighten the net"

— To increase security or control to catch someone.

The police are tightening the net around the suspect.

Idiomatic

"Under lock and key"

— Stored very securely.

The secret documents are kept under lock and key.

Neutral

"Watch someone like a hawk"

— To monitor someone very closely for security or control.

Security watched the suspicious man like a hawk.

Informal

"Cover your tracks"

— To hide evidence of what you have done for your own security.

The hacker tried to cover his tracks by deleting the logs.

Informal

"Safe and sound"

— Completely safe and without injury.

The children returned from the trip safe and sound.

Neutral

"On guard"

— Being watchful and ready for danger.

The soldiers remained on guard throughout the night.

Neutral

"In safe hands"

— Being looked after by someone reliable and secure.

With the new manager, the company is in safe hands.

Neutral

Easily Confused

security vs Safety

Both involve being free from harm.

Safety is usually about preventing accidents (like wearing a seatbelt). Security is about preventing deliberate attacks (like locking a door).

We improved workplace safety by adding non-slip mats, and we improved security by adding cameras.

security vs Insecurity

It is the opposite, but used differently.

Insecurity is almost always about a psychological feeling of not being good enough, whereas 'lack of security' is about physical danger.

He has many personal insecurities, but his house has excellent security.

security vs Securities

It looks like a simple plural.

In general English, 'security' is uncountable. 'Securities' is a technical term for financial investments like stocks.

The bank manages millions of dollars in government securities.

security vs Surety

Similar root and meaning.

Surety is a specific legal guarantee or a person who pays a debt if someone else fails. Security is the general concept or the asset itself.

The bond acts as a surety for the contractor's performance.

security vs Safeguard

Synonymous in many contexts.

Safeguard is often used as a verb or to describe a specific protective measure within a larger system.

We must safeguard the rights of the citizens to ensure long-term security.

Sentence Patterns

The [noun] is [preposition] security.

The guard is at security.

I have a [adjective] security [noun].

I have a strong security password.

There was a [noun] of security.

There was a breach of security.

[Noun] provides a sense of security.

Money provides a sense of security.

The [noun] is a matter of [adjective] security.

The leak is a matter of national security.

To [verb] security against [noun].

To bolster security against cyberattacks.

The [noun] of [noun] has [verb] security.

The securitization of debt has undermined market security.

[Noun] is a prerequisite for [noun] security.

Trust is a prerequisite for ontological security.

Word Family

Nouns

Verbs

Adjectives

How to Use It

frequency

Extremely high in news, business, and daily life.

Common Mistakes

I wear a helmet for my security. → I wear a helmet for my safety.
Helmets protect against accidents, so 'safety' is the correct word.
The bank has many digital securities. → The bank has strong digital security.
'Securities' refers to financial assets, not protection measures.
Please security the door before you leave. → Please secure the door before you leave.
'Security' is a noun; 'secure' is the verb.
He has a lot of securities about his height. → He has a lot of insecurities about his height.
Personal doubts are called 'insecurities'.
I passed the security at the airport. → I went through security at the airport.
'Go through security' is the standard idiomatic phrase.

Tips

Security vs. Safety

Always use 'security' for locks, guards, and passwords. Use 'safety' for helmets, seatbelts, and fire drills.

Countability

Don't say 'a security' unless you are talking about a specific financial instrument in a very technical context. Use 'a sense of security' instead.

Job Titles

In a business setting, 'Security' often refers to the IT department (Cybersecurity) or the physical guards. Clarify which one you mean.

Common Verbs

Security is often 'tightened', 'breached', 'compromised', 'provided', or 'maintained'. Memorize these pairs.

Emotional Use

Use 'insecurity' (plural: insecurities) to talk about personal doubts, but 'security' (singular) for the feeling of being safe.

Plural Meaning

When you see 'securities' in a newspaper, it almost always means stocks and bonds, not multiple security guards.

Airport Phrasing

The phrase is always 'go through security'. You don't 'pass the security' or 'cross the security'.

Collateral

In a loan context, 'security' is the thing the bank takes if you don't pay. It's a formal way to say 'guarantee'.

Compound Nouns

Security is a very productive word for compound nouns. If you're unsure, 'security [noun]' is often a valid term.

Stress

The stress is on the 'CUR'. Practice saying 'se-CUR-i-ty' to sound more natural.

Memorize It

Mnemonic

Think of 'SECURE-IT-Y'. You want to SECURE IT (your house, your data, your money) so YOU feel safe.

Visual Association

Imagine a giant, golden padlock protecting a house, a computer, and a bag of money all at once.

Word Web

Guard Lock Password Safe Money Peace Alarm Police

Challenge

Try to use the word 'security' in three different ways (physical, financial, and psychological) in one short paragraph.

Word Origin

The word 'security' comes from the Latin 'securitas', which is derived from 'securus'. The Latin prefix 'se-' means 'without' and 'cura' means 'care' or 'worry'.

Original meaning: The original meaning was 'freedom from care' or 'freedom from worry'.

It belongs to the Romance branch of the Indo-European family, entering English via Old French 'securite'.

Cultural Context

Be careful when discussing 'security' in the context of policing or immigration, as it can be a politically sensitive topic.

In the US, 'Homeland Security' is a specific post-9/11 term. In the UK, 'Social Security' is often called 'National Insurance' or 'Benefits'.

The United Nations Security Council (UNSC) The Social Security Act of 1935 (USA) The movie 'National Security' (2003)

Practice in Real Life

Real-World Contexts

Airport Travel

Go through security
Security checkpoint
Security screening
Remove items for security

Information Technology

Security patch
Security vulnerability
Cybersecurity protocol
Security breach

Finance and Banking

Market securities
Security for a loan
Securities and Exchange Commission
Financial security

Real Estate

Security deposit
Security system
Gated security
Building security

Psychology

Sense of security
Emotional security
Secure attachment
Insecurity

Conversation Starters

"How much do you value job security compared to a high salary?"

"Do you think there are too many security cameras in our cities?"

"What measures do you take to ensure your personal cybersecurity?"

"Does having a lot of money actually provide a sense of security?"

"What was your experience like going through airport security recently?"

Journal Prompts

Describe a place where you feel a total sense of security. Why is that?

Reflect on a time when you felt your security (physical or digital) was threatened.

Is the trade-off between national security and personal privacy worth it?

How has your definition of 'security' changed as you have gotten older?

Write about the importance of financial security in your long-term life goals.

Frequently Asked Questions

10 questions

In most cases, it is uncountable (e.g., 'Security is tight'). However, in finance, it is countable and used in the plural 'securities' to mean stocks and bonds.

Security refers to protection against intentional harm (theft, hacking). Safety refers to protection against unintentional harm (accidents, fire). For example, you have airport security but workplace safety.

It refers to the probability that an individual will keep their job; it is the feeling that your employment is stable and not at risk of being terminated.

It is a sum of money paid at the beginning of a rental agreement to cover any potential damages or unpaid rent. It is usually returned at the end of the lease.

Yes, it is often used as a collective noun to refer to the people who provide security. For example, 'I'll call security' means you will call the guards.

Securities are tradable financial assets, such as stocks (equities), bonds (debt), or derivatives. They represent a financial value.

It is the requirement to maintain the survival of the state through the use of economic power, diplomacy, power projection, and political power.

You don't. The verb form is 'to secure'. For example, 'Please secure the door' (not 'security the door').

It is an official status granted to individuals allowing them access to classified or secret information, usually after a background check.

It is an idiom meaning that you feel safe and protected when you are actually in danger or at risk. It often leads to people being less careful.