At the A1 level, the word 'behavior' is a bit advanced, but you might hear it in school or at home. It simply means the way a person acts. If you are 'good,' your behavior is good. If you are 'bad,' your behavior is bad. You can think of it as the 'actions' of a person. For example, if a child says 'please' and 'thank you,' they have good behavior. If a dog sits when you tell it to, it has good behavior. It is a noun, so we use it like a thing. You can say 'I like your behavior.' It is important to know that in the US we spell it 'behavior' and in the UK they spell it 'behaviour.' Both mean the same thing. You will mostly use this word to talk about children, pets, or how you should act in a new place. It is a very useful word for describing if someone is being nice or not nice. Remember, behavior is about what we can see people doing. If someone is smiling and helping, that is part of their behavior. If someone is shouting, that is also part of their behavior. It is a general word for all the things we do every day.
At the A2 level, you should understand that 'behavior' describes the way someone acts in different situations. It is usually an uncountable noun, which means we don't often say 'a behavior' or 'behaviors' in normal talk. We use adjectives to describe it, like 'good behavior,' 'bad behavior,' or 'strange behavior.' You might hear a teacher say, 'I am happy with your behavior today.' This means the teacher likes how the students are acting. You can also use it for animals. For example, 'The behavior of the cat was very funny.' It is also common in phrases like 'on your best behavior,' which means acting as politely as possible. This is common when you go to a party or a job interview. You should also know the verb 'behave.' If you 'behave well,' you have 'good behavior.' It is a key word for social life because it helps us talk about rules and how people follow them. When you learn this word, you can start to describe people's personalities by looking at their actions. It is a step up from just saying 'good' or 'bad' because it focuses on the actions themselves.
At the B1 level, you can use 'behavior' in more specific contexts, such as in the workplace or in scientific discussions. You understand that behavior isn't just about being 'good' or 'bad,' but about patterns of action. For example, you might talk about 'consumer behavior,' which is how people decide what to buy. Or you might discuss 'social behavior,' which is how people act in groups. You can also use more complex adjectives like 'aggressive,' 'professional,' 'erratic,' or 'predictable' to describe behavior. In a professional setting, you might hear about a 'code of conduct,' which is a set of rules for behavior. You should also be aware of the difference between 'behavior' and 'conduct'—conduct is more formal. You might also encounter the word in psychological contexts, where 'behaviors' (plural) might be used to refer to specific types of actions that researchers study. This level involves using the word to analyze situations, not just describe them. For instance, you could say, 'The economic behavior of the country is changing,' which is a much more sophisticated use of the word than just talking about a child's actions.
At the B2 level, you are expected to use 'behavior' with nuance and precision. You can discuss the 'behavioral' aspects of various fields, such as behavioral economics or behavioral psychology. You understand that behavior can be influenced by many factors, including environment, genetics, and social pressure. You can use the word to describe the 'behavior of systems' or 'the behavior of materials' in technical contexts. For example, 'The behavior of the alloy under high temperatures was unexpected.' You are also comfortable with idioms and collocations like 'behavioral patterns,' 'antisocial behavior,' and 'exemplary behavior.' You can distinguish between 'behavior' and 'demeanor,' knowing that demeanor is more about the outward impression someone gives. You might write essays about 'human behavior' and how it impacts the environment or society. At this level, you can also use the word to talk about abstract concepts, such as the 'behavior of the markets' or the 'behavior of a virus.' Your ability to use 'behavior' in both concrete and abstract ways shows a high level of English proficiency.
At the C1 level, your use of 'behavior' is sophisticated and context-aware. You can engage in deep discussions about 'behavioral modification,' 'organizational behavior,' and 'the biological basis of behavior.' You understand the subtle differences between 'behavior,' 'conduct,' 'deportment,' and 'mannerisms.' You can use the word to describe complex phenomena, such as 'collective behavior' in crowds or 'stochastic behavior' in mathematics. You are aware of the academic usage of 'behaviors' as a countable noun to denote specific, measurable units of action in research. You can analyze how 'cultural behavior' varies across different societies and how it is shaped by history and tradition. Your writing might include phrases like 'the behavioral nuances of the protagonist' or 'the aberrant behavior of the data points.' You can use the word to explore the intersection of ethics and action, discussing 'moral behavior' in the face of adversity. At this level, 'behavior' is a tool for precise analysis and critical thinking in both academic and professional spheres.
At the C2 level, you have a complete mastery of 'behavior' and all its related forms and nuances. You can use the word in highly specialized academic, scientific, and literary contexts. You might discuss 'the ethology of animal behavior' or 'the neurobiological correlates of human behavior.' You are adept at using the word to describe the most subtle shifts in tone or action, perhaps in a literary critique of a character's 'mercurial behavior.' You understand the historical evolution of the word and its etymological roots. You can use 'behavior' to describe the functioning of complex algorithms, the fluctuations of quantum particles, or the grand movements of historical trends. Your vocabulary includes rare related words and you can use 'behavioral' as a sophisticated modifier in any field. You can navigate the most formal legal documents regarding 'professional conduct and behavior' with ease. For a C2 learner, 'behavior' is not just a word, but a multifaceted concept that can be applied to almost any area of human knowledge, from the most microscopic physical interactions to the broadest social movements.

behavior in 30 Seconds

  • Behavior is a noun that describes how people, animals, or systems act and react in different situations.
  • It is usually an uncountable noun, but can be pluralized as 'behaviors' in scientific or technical contexts.
  • Commonly modified by adjectives like 'good,' 'bad,' 'professional,' or 'erratic' to evaluate conduct.
  • It is a key term in psychology, education, and business to describe patterns of action and social norms.

The word behavior is a fundamental term in the English language used to describe the actions, reactions, and conduct of individuals, animals, or even complex systems. At its core, behavior refers to the observable way in which something functions or acts in response to its environment. When we talk about human behavior, we are often looking at the intersection of psychology, sociology, and biology. It is not just about what someone does in a single moment, but also the patterns they establish over time. For instance, if a student consistently raises their hand to speak, that is a pattern of respectful behavior. Conversely, if a person reacts with anger every time they receive criticism, that is a reactive behavior. The term is versatile, moving from the playground—where teachers monitor the behavior of children—to the laboratory, where scientists study the behavior of subatomic particles or the behavioral patterns of migratory birds.

Social Context
In social settings, behavior is often judged against a set of norms or expectations. Good behavior implies following rules and showing respect, while bad behavior suggests a deviation from these standards.

The teacher was very impressed with the student's behavior during the field trip to the museum.

Furthermore, behavior can be categorized into various types. We speak of innate behavior, which is instinctive and not learned, such as a spider spinning a web. On the other hand, learned behavior is acquired through experience and education, like learning to drive a car or speak a second language. In modern professional contexts, 'organizational behavior' is a field of study that looks at how people interact within groups, aiming to make businesses more efficient and workplaces more harmonious. Understanding behavior is key to empathy; by observing how others act, we can often gain insight into their underlying emotions, needs, and motivations. Whether it is the 'erratic behavior' of a malfunctioning machine or the 'exemplary behavior' of a hero, this word captures the essence of action and existence.

Scientific Application
In science, behavior refers to the way a substance or organism responds to specific stimuli, such as how chemicals react under high pressure.

Scientists are studying the behavior of dolphins in the wild to understand their communication methods.

The word also carries a moral weight. We often hear phrases like 'on your best behavior,' which serves as a reminder to act politely and follow social etiquette, especially in formal or unfamiliar situations. This suggests that behavior is something we can control and modify based on our surroundings. In the digital age, we even discuss 'online behavior,' referring to how people conduct themselves on social media platforms and the internet. This includes everything from digital etiquette to the way algorithms track our 'consumer behavior' to show us targeted advertisements. Ultimately, behavior is the outward expression of an internal state, a bridge between the mind and the physical world.

Her behavior changed significantly after she received the good news.

Psychological Perspective
Psychologists use the term to describe the range of actions and mannerisms made by individuals in conjunction with themselves or their environment.

The dog's aggressive behavior was a result of fear, not malice.

It is important to model positive behavior for children to follow.

Using the word behavior correctly involves understanding its grammatical role as a noun and its typical collocations. Most commonly, it is used as an uncountable noun to describe the general way someone acts. For example, 'His behavior was unacceptable.' In this sentence, 'behavior' refers to the totality of his actions. You will often see it modified by adjectives like 'good,' 'bad,' 'strange,' 'professional,' or 'antisocial.' These adjectives provide the necessary context to evaluate the actions being described. When you want to describe the way someone is acting right now, you might say, 'I don't understand your behavior today,' implying that the current actions are different from the norm.

Adjective Modification
Adjectives like 'exemplary,' 'erratic,' or 'disruptive' are frequently paired with behavior to give a specific evaluation of conduct.

The company has a strict policy regarding professional behavior in the office.

In more formal or scientific writing, 'behavior' can become a countable noun: 'behaviors.' This is used when researchers are categorizing different types of actions. For instance, 'The study identified three distinct mating behaviors in the species.' Here, 'behaviors' refers to specific, repeatable sets of actions. Another common grammatical structure is the use of 'behavior' in compound nouns or as a modifier, such as 'behavioral patterns,' 'behavioral therapy,' or 'behavioral science.' These terms shift the focus from the action itself to the study or systematic analysis of those actions. When using the word in a sentence, it often follows a possessive pronoun or a noun with an apostrophe-s, such as 'the child's behavior' or 'their behavior.'

Verb Pairings
Common verbs used with behavior include 'observe,' 'modify,' 'influence,' 'monitor,' and 'reward.'

Parents often try to reward good behavior with praise or small treats.

You can also use 'behavior' to describe the performance of inanimate objects. For example, 'The car's behavior on icy roads was impressive,' or 'The behavior of the stock market is difficult to predict.' In these cases, the word is used metaphorically to describe how something responds to external conditions. It is also important to note the prepositional phrases that often follow the word, such as 'behavior toward others' or 'behavior in the classroom.' These phrases help specify the environment or the target of the actions. By mastering these patterns, you can use 'behavior' to describe everything from a toddler's tantrum to the complex movements of a celestial body.

The behavior of the software was erratic after the latest update.

Prepositional Usage
We use 'behavior toward' when discussing how someone treats another person, and 'behavior in' to describe conduct within a specific place.

The principal spoke to the students about their behavior during the assembly.

We need to analyze the behavior of the virus to develop a vaccine.

The word behavior is ubiquitous, appearing in a wide range of daily and specialized contexts. In a domestic setting, you will hear it most often from parents and caregivers. Phrases like 'Mind your behavior' or 'That was very good behavior' are staples of childhood upbringing. It is the primary word used to teach children about social boundaries and expectations. In schools, teachers use the word constantly to manage the classroom environment. You might see 'behavior charts' on the wall or receive a 'behavior report' during a parent-teacher conference. In these instances, the word is synonymous with discipline and social compliance.

Educational Setting
Teachers often discuss 'classroom behavior' to refer to how students interact with each other and follow instructions during lessons.

The school has a zero-tolerance policy for bullying behavior.

In the professional world, 'behavior' is a key term in Human Resources and management. During performance reviews, an employee's behavior—such as their punctuality, teamwork, and communication style—is evaluated just as much as their technical skills. You might hear about 'professional behavior' or 'conduct unbecoming,' which refers to actions that violate the standards of a profession. In the legal system, the word is used to describe the actions of a defendant or the general conduct of citizens. 'Good behavior' is a legal term that can lead to a reduced sentence for a prisoner. In the news, you might hear reports on 'criminal behavior' or 'market behavior,' where the word is used to summarize complex trends and actions.

Scientific Media
Science journalists use the word to describe everything from the 'behavior of black holes' to the 'behavior of new materials' in technology.

The documentary explored the complex social behavior of elephant herds.

Finally, in the realm of health and psychology, 'behavior' is a technical term. Doctors might ask about a patient's 'eating behavior' or 'sleep behavior' to diagnose an illness. Therapists use 'Cognitive Behavioral Therapy' (CBT) to help patients change negative thought patterns and actions. In the tech industry, 'user behavior' is analyzed to improve website design and app functionality. Every time you click a button or scroll through a feed, your behavior is being recorded and studied. Whether it is a casual comment about a friend's 'strange behavior' or a high-level scientific paper on 'atomic behavior,' the word is an essential tool for describing the world in motion.

The marketing team is analyzing consumer behavior to plan the next campaign.

Digital Context
'User behavior' refers to the way people interact with websites, apps, and digital platforms.

His behavior at the wedding was perfectly dignified.

The report highlighted the behavior of the crowd during the protest.

One of the most frequent mistakes learners make with the word behavior is treating it as a countable noun in everyday conversation. While it is common to say 'a behavior' in a psychology textbook, in general English, it is almost always uncountable. For example, saying 'He did a bad behavior' is incorrect; instead, you should say 'He behaved badly' or 'His behavior was bad.' Another common error is the confusion between 'behavior' and 'conduct.' While they are synonyms, 'conduct' is much more formal and often refers to a person's behavior in a professional or official capacity. You wouldn't usually talk about a toddler's 'conduct' at a birthday party; 'behavior' is the more appropriate, natural choice.

Countability Error
Incorrect: 'She has many good behaviors.' Correct: 'She shows a lot of good behavior' or 'She behaves well in many ways.'

It is a mistake to think that behavior is always a choice; sometimes it is a reaction to stress.

Spelling is another area where mistakes occur, specifically the difference between American and British English. American English uses 'behavior,' while British English uses 'behaviour.' Using the 'u' in an American context or omitting it in a British context isn't a 'grammar' error, but it can be seen as a spelling inconsistency. Additionally, learners sometimes confuse the noun 'behavior' with the verb 'behave.' You might hear someone say 'He behavior well,' which is incorrect. The correct form is 'He behaves well.' Remember that 'behavior' is the thing (the noun), and 'behave' is the action (the verb). Mixing these up can make your sentences sound unnatural and confusing to native speakers.

Verb vs. Noun
Incorrect: 'I like your behave.' Correct: 'I like your behavior' or 'I like how you behave.'

The manager noted the employee's behavior but didn't realize it was caused by a personal crisis.

Finally, there is the nuance of using 'behavior' to describe objects. While it is perfectly fine to talk about the 'behavior of a car' or 'behavior of a stock,' some learners overextend this and use it for very simple objects where 'function' or 'work' would be better. For example, 'The behavior of my pen is bad' sounds strange; 'My pen isn't working well' is much more natural. Use 'behavior' for objects when they are reacting to something or showing a complex pattern. Understanding these subtle distinctions will help you avoid common pitfalls and speak more like a native. Always pay attention to the context and the level of formality required for the situation.

Avoid the mistake of judging someone's entire character based on a single instance of bad behavior.

Overuse of 'Behaviors'
In non-scientific writing, avoid using the plural 'behaviors' unless you are specifically listing different categories of actions.

The study of human behavior is a lifelong pursuit for many social scientists.

Don't let the behavior of others destroy your inner peace.

While behavior is a very broad and useful word, there are several synonyms that might be more precise depending on the context. One of the closest synonyms is conduct. Conduct is generally more formal and is often used in legal or professional contexts, such as a 'code of conduct.' It implies a sense of responsibility and adherence to rules. Another similar word is actions. While behavior refers to the general pattern, 'actions' usually refers to specific things someone has done. For example, 'I judge him by his actions, not his words.' This focuses on individual events rather than a general manner of acting.

Behavior vs. Conduct
Behavior is general and can be used for anyone; conduct is formal and usually refers to how someone behaves in a position of responsibility.

The soldier's behavior was a credit to his regiment, showing great discipline.

Another useful alternative is demeanor. Demeanor refers specifically to a person's outward appearance or behavior, especially as it reflects their mood or character. If someone is calm and professional, you might describe their 'calm demeanor.' This is more about the 'vibe' or 'aura' a person gives off through their behavior. Manners is another related word, but it is much narrower in scope. Manners refers specifically to social politeness and etiquette, such as saying 'please' and 'thank you.' You can have good behavior but poor manners, or vice versa. For instance, a person might be very helpful (good behavior) but eat with their mouth open (poor manners).

Behavior vs. Manners
Behavior is the broad category of all actions; manners are the specific subset of actions related to social politeness.

Despite the stress of the situation, she maintained a professional behavior throughout the meeting.

In scientific contexts, you might use words like response or reaction. These are often more precise when describing how an organism or substance behaves when something happens to it. For example, 'the plant's response to sunlight' is more technical than 'the plant's behavior in sunlight.' Finally, ways is a very informal synonym. You might say, 'I don't like his ways,' meaning you don't like his general behavior or habits. Choosing the right word depends on how formal you want to be and exactly what aspect of action you are trying to highlight. By expanding your vocabulary with these alternatives, you can express yourself with greater clarity and sophistication.

The behavior of the crowd was unpredictable, ranging from cheers to boos.

Scientific Synonyms
Words like 'activity,' 'functioning,' and 'performance' can sometimes replace behavior in technical or mechanical descriptions.

His behavior toward his colleagues was always helpful and kind.

The report criticized the behavior of the police during the incident.

How Formal Is It?

Formal

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Neutral

""

Informal

""

Child friendly

""

Slang

""

Fun Fact

The suffix '-iour' was influenced by the French word 'envaïssure', which is why it has that specific ending in British English (behaviour).

Pronunciation Guide

UK /bɪˈheɪvjə(r)/
US /bɪˈheɪvjər/
The stress is on the second syllable: be-HAV-ior.
Rhymes With
savior pavier flavor favor waver aver slaver quaver
Common Errors
  • Pronouncing it as 'bee-hav-yor' with too much emphasis on the first syllable.
  • Forgetting the 'v' sound in the middle.
  • Confusing the pronunciation with 'believe'.
  • Misplacing the stress on the first or third syllable.
  • In British English, forgetting the 'u' in spelling but trying to change the sound.

Difficulty Rating

Reading 2/5

Easy to recognize in most texts.

Writing 3/5

Requires care with spelling (US vs UK) and countability.

Speaking 2/5

Commonly used in daily conversation.

Listening 2/5

Clear pronunciation in most dialects.

What to Learn Next

Prerequisites

act do good bad person

Learn Next

conduct demeanor attitude psychology habit

Advanced

ethology behaviorism stochastic aberrant exemplary

Grammar to Know

Uncountable Nouns

We say 'His behavior was good,' not 'His behaviors were good' (in general context).

Possessive Nouns

The child's behavior (use 's to show who the behavior belongs to).

Adjective Placement

Put the adjective before the noun: 'professional behavior'.

Verb Agreement

Behavior (singular) takes a singular verb: 'Behavior is important'.

Preposition 'Toward'

Use 'toward' to show the object of the action: 'behavior toward others'.

Examples by Level

1

The boy has good behavior.

Le garçon a un bon comportement.

Uncountable noun used with an adjective.

2

I like your behavior today.

J'aime ton comportement aujourd'hui.

Possessive pronoun + noun.

3

The dog's behavior is very nice.

Le comportement du chien est très gentil.

Possessive 's + noun.

4

Bad behavior is not allowed in school.

Le mauvais comportement n'est pas autorisé à l'école.

Subject of the sentence.

5

Please show me your best behavior.

S'il vous plaît, montrez-moi votre meilleur comportement.

Part of a common phrase.

6

The cat's behavior was funny.

Le comportement du chat était drôle.

Noun following a possessive.

7

Is his behavior good?

Son comportement est-il bon ?

Question form.

8

We talk about behavior in class.

Nous parlons du comportement en classe.

Object of a preposition.

1

She was on her best behavior at the party.

Elle s'est tenue à carreau à la fête.

Idiomatic phrase 'on one's best behavior'.

2

The teacher noticed a change in his behavior.

L'enseignant a remarqué un changement dans son comportement.

Noun as the object of a prepositional phrase.

3

It is important to have professional behavior at work.

Il est important d'avoir un comportement professionnel au travail.

Adjective + noun.

4

The animal's behavior was strange.

Le comportement de l'animal était étrange.

Descriptive sentence.

5

They are studying the behavior of birds.

Ils étudient le comportement des oiseaux.

Noun in a scientific context.

6

His behavior toward his sister was very kind.

Son comportement envers sa sœur était très gentil.

Use of 'behavior toward'.

7

The parents were worried about their son's behavior.

Les parents étaient inquiets du comportement de leur fils.

Possessive construction.

8

Good behavior is often rewarded.

Le bon comportement est souvent récompensé.

Passive voice sentence.

1

The company analyzes consumer behavior to increase sales.

L'entreprise analyse le comportement des consommateurs pour augmenter les ventes.

Compound noun 'consumer behavior'.

2

Aggressive behavior will not be tolerated in this office.

Le comportement agressif ne sera pas toléré dans ce bureau.

Adjective + noun as subject.

3

The psychologist studied the child's social behavior.

Le psychologue a étudié le comportement social de l'enfant.

Specific type of behavior.

4

His erratic behavior made everyone feel uncomfortable.

Son comportement erratique a mis tout le monde mal à l'aise.

Adjective 'erratic' modifying behavior.

5

We need to modify our behavior to protect the environment.

Nous devons modifier notre comportement pour protéger l'environnement.

Verb 'modify' + noun.

6

The behavior of the stock market is hard to predict.

Le comportement du marché boursier est difficile à prévoir.

Metaphorical use for a system.

7

She was praised for her exemplary behavior during the crisis.

Elle a été félicitée pour son comportement exemplaire pendant la crise.

Adjective 'exemplary' modifying behavior.

8

The report focuses on the behavior of the virus.

Le rapport se concentre sur le comportement du virus.

Scientific context.

1

Behavioral economics explores why people make irrational decisions.

L'économie comportementale explore pourquoi les gens prennent des décisions irrationnelles.

Adjectival form 'behavioral'.

2

The study observed several different mating behaviors in the species.

L'étude a observé plusieurs comportements d'accouplement différents dans l'espèce.

Countable use 'behaviors' in a scientific context.

3

His behavior was inconsistent with his previous statements.

Son comportement était incompatible avec ses déclarations précédentes.

Use of 'inconsistent with'.

4

The software update fixed the erratic behavior of the application.

La mise à jour du logiciel a corrigé le comportement erratique de l'application.

Describing technology.

5

Antisocial behavior can have a negative impact on the community.

Le comportement antisocial peut avoir un impact négatif sur la communauté.

Common sociological term.

6

They are researching the biological basis of human behavior.

Ils font des recherches sur la base biologique du comportement humain.

Academic context.

7

The therapist used cognitive behavioral therapy to help the patient.

Le thérapeute a utilisé la thérapie cognitivo-comportementale pour aider le patient.

Proper noun phrase.

8

The behavior of the crowd was influenced by the speaker's rhetoric.

Le comportement de la foule a été influencé par la rhétorique de l'orateur.

Passive voice with 'influenced by'.

1

The aberrant behavior of the data points suggested an error in the experiment.

Le comportement aberrant des points de données suggérait une erreur dans l'expérience.

Adjective 'aberrant' in a technical context.

2

The novel explores the complex behavioral nuances of its protagonist.

Le roman explore les nuances comportementales complexes de son protagoniste.

Literary analysis.

3

Societal norms often dictate acceptable behavior in public spaces.

Les normes sociétales dictent souvent le comportement acceptable dans les espaces publics.

Sociological discussion.

4

The study of collective behavior explains how riots and panics start.

L'étude du comportement collectif explique comment les émeutes et les paniques commencent.

Specific academic term.

5

Her behavior was a manifestation of her deep-seated anxieties.

Son comportement était une manifestation de ses angoisses profondes.

Psychological interpretation.

6

The ethical implications of consumer behavior are increasingly scrutinized.

Les implications éthiques du comportement des consommateurs sont de plus en plus examinées.

Complex noun phrase.

7

The behavior of subatomic particles defies classical physics.

Le comportement des particules subatomiques défie la physique classique.

Scientific context.

8

The government is trying to incentivize pro-environmental behavior.

Le gouvernement essaie d'encourager les comportements pro-environnementaux.

Policy-related usage.

1

The ethological study provided profound insights into the behavior of primates.

L'étude éthologique a fourni des informations approfondies sur le comportement des primates.

Highly specialized vocabulary.

2

His mercurial behavior made it impossible to maintain a stable relationship.

Son comportement mercuriel rendait impossible le maintien d'une relation stable.

Sophisticated adjective 'mercurial'.

3

The stochastic behavior of the system was modeled using advanced algorithms.

Le comportement stochastique du système a été modélisé à l'aide d'algorithmes avancés.

Technical/Mathematical context.

4

The diplomat's behavior was a masterclass in subtle negotiation.

Le comportement du diplomate était une leçon de négociation subtile.

Metaphorical 'masterclass'.

5

The neurobiological correlates of addictive behavior are still being mapped.

Les corrélats neurobiologiques du comportement addictif sont encore en cours de cartographie.

High-level scientific terminology.

6

The court examined whether the defendant's behavior constituted a pattern of harassment.

Le tribunal a examiné si le comportement du défendeur constituait un modèle de harcèlement.

Legal/Formal context.

7

The inherent behavior of the material makes it unsuitable for aerospace applications.

Le comportement inhérent du matériau le rend impropre aux applications aérospatiales.

Engineering context.

8

She analyzed the behavioral archetypes present in ancient mythology.

Elle a analysé les archétypes comportementaux présents dans la mythologie antique.

Interdisciplinary academic use.

Antonyms

inaction misbehavior

Common Collocations

good behavior
human behavior
animal behavior
consumer behavior
aggressive behavior
professional behavior
erratic behavior
learned behavior
social behavior
online behavior

Common Phrases

on your best behavior

— Acting as politely and correctly as possible.

Be on your best behavior at Grandma's house.

mind your behavior

— A warning to act correctly and follow rules.

Mind your behavior while we are in the library.

behavioral patterns

— Recurring ways in which a person or group acts.

The detective looked for behavioral patterns in the crimes.

behavior modification

— The process of changing someone's behavior through therapy or training.

The school uses behavior modification to help students.

code of behavior

— A set of rules describing how people should act.

The club has a strict code of behavior for its members.

aberrant behavior

— Actions that are not normal or acceptable.

The scientist noted the aberrant behavior of the cells.

exemplary behavior

— Behavior that is so good it should be an example for others.

He was awarded for his exemplary behavior.

disruptive behavior

— Actions that cause trouble or stop things from happening normally.

The student was sent home for disruptive behavior.

risky behavior

— Actions that could lead to danger or harm.

Teenagers sometimes engage in risky behavior.

unacceptable behavior

— Actions that are not allowed or are considered very bad.

Bullying is completely unacceptable behavior.

Often Confused With

behavior vs conduct

Conduct is more formal and often implies a set of rules.

behavior vs manners

Manners are specifically about social politeness, not all actions.

behavior vs demeanor

Demeanor is the outward appearance or 'vibe' someone has.

Idioms & Expressions

"on one's best behavior"

— To act as politely as possible to make a good impression.

I'll be on my best behavior when I meet your parents.

informal
"misbehavior"

— Bad or inappropriate behavior, especially by a child.

The child was punished for his misbehavior.

neutral
"conduct oneself"

— To behave in a particular way, especially a good way.

He conducted himself with great dignity.

formal
"act up"

— To behave badly or function poorly (often used for children or machines).

The kids always act up when we have guests.

informal
"toe the line"

— To behave according to the rules or expectations.

New employees are expected to toe the line.

informal
"keep your nose clean"

— To stay out of trouble and behave well.

He's trying to keep his nose clean after his release from prison.

slang
"mind your P's and Q's"

— To be careful about your behavior and manners.

Mind your P's and Q's at the wedding.

informal
"walk the straight and narrow"

— To behave in a moral and honest way.

He's been walking the straight and narrow for years now.

informal
"be a model of"

— To show perfect behavior in a certain area.

She is a model of professional behavior.

neutral
"bad apple"

— A person whose bad behavior negatively affects others in a group.

One bad apple can ruin the whole team's behavior.

informal

Easily Confused

behavior vs behave

It is the verb form of the noun behavior.

Behave is an action (verb), behavior is the thing (noun).

You must behave (v) well. Your behavior (n) must be good.

behavior vs attitude

Both relate to how a person is.

Attitude is how you think/feel; behavior is what you do.

He has a bad attitude, which leads to bad behavior.

behavior vs action

Both involve doing something.

Action is a single event; behavior is a pattern or manner.

His quick action saved the day, but his general behavior is lazy.

behavior vs habit

Both are repeated actions.

A habit is something you do automatically; behavior is a broader term for all actions.

Biting nails is a habit; being kind is a behavior.

behavior vs reaction

Both involve responding to something.

A reaction is immediate and specific; behavior can be a long-term pattern.

His reaction to the news was shock, but his behavior afterward was calm.

Sentence Patterns

A1

Subject + has + [adj] + behavior.

He has good behavior.

A2

Subject + was on + [possessive] + best behavior.

I was on my best behavior.

B1

The [noun] + of the [noun] + is + [adj].

The behavior of the market is erratic.

B2

Subject + [verb] + [adj] + behavior.

They observed aggressive behavior.

C1

The [adj] + behavior + suggests + [clause].

The aberrant behavior suggests a problem.

C2

The [noun] + correlates + of + [adj] + behavior.

The biological correlates of human behavior.

A2

There was a change in + [possessive] + behavior.

There was a change in his behavior.

B1

Subject + is studying + [adj] + behavior.

She is studying animal behavior.

Word Family

Nouns

Verbs

Adjectives

Related

How to Use It

frequency

Very high in both spoken and written English.

Common Mistakes
  • He did a bad behavior. He behaved badly. / His behavior was bad.

    Behavior is a noun, not a verb. You don't 'do' a behavior; you 'have' it or 'show' it.

  • I like your behave. I like your behavior.

    Behave is a verb. You need the noun form 'behavior' after the possessive 'your'.

  • The childs behavior was good. The child's behavior was good.

    You need an apostrophe to show possession.

  • She has many good behaviors. She shows a lot of good behavior.

    In general English, behavior is uncountable. Use 'a lot of' or 'much' instead of 'many'.

  • The behavior of the pen is broken. The pen isn't working.

    Don't use 'behavior' for simple objects. Use it for complex systems or living things.

Tips

Uncountable usage

Treat 'behavior' as an uncountable noun in 95% of your sentences. Use 'much' instead of 'many' if you need to quantify it.

Use adjectives

Behavior is a 'weak' noun on its own. Always pair it with a strong adjective like 'exemplary,' 'erratic,' or 'disruptive' to be more descriptive.

Consistency

Decide whether you are using US or UK English and stick to it. Don't mix 'behavior' and 'behaviour' in the same document.

Natural Phrasing

Instead of saying 'Your behavior is good,' try 'You're behaving very well.' It often sounds more natural in spoken English.

Social Norms

Remember that what is considered 'good behavior' changes depending on the culture and the situation.

Scientific Plurals

If you are writing a psychology paper, feel free to use 'behaviors' to categorize different types of actions.

Best Behavior

Use 'on my best behavior' when you want to show you are trying hard to be polite.

Professionalism

In a job interview, talk about your 'professional behavior' to show you understand workplace expectations.

CBT

If you hear 'CBT,' it stands for Cognitive Behavioral Therapy, a very common type of talk therapy.

Observation

Use the verb 'observe' with behavior. 'I observed his behavior' sounds more professional than 'I saw what he did'.

Memorize It

Mnemonic

Think of 'Be Have Your'. You must 'Be' a person who 'Has' control over 'Your' actions. Be-Have-Your = Behavior.

Visual Association

Imagine a traffic light. Green behavior is good, red behavior is bad. This helps you associate the word with rules and actions.

Word Web

Actions Rules Psychology Conduct Manners Response Patterns Social

Challenge

Try to use the word 'behavior' three times today: once to describe a pet, once for a person, and once for a machine.

Word Origin

The word 'behavior' comes from the Middle English 'behaviour', which was formed from the verb 'behave' and the suffix '-iour'. The verb 'behave' itself comes from 'be-' (thoroughly) and 'have' (to hold or possess).

Original meaning: The original meaning was 'to have or bear oneself' in a certain way.

Germanic (via Old English 'behabban').

Cultural Context

Be careful when describing someone's behavior as 'strange' or 'abnormal,' as this can be seen as judgmental or insensitive to mental health issues.

In the UK and US, 'on your best behavior' is a very common idiom used with children.

B.F. Skinner, the famous psychologist known for 'Behaviorism'. The phrase 'Code of Conduct' in military and corporate life. The book 'The Selfish Gene' which discusses animal behavior.

Practice in Real Life

Real-World Contexts

School

  • classroom behavior
  • behavior report
  • disruptive behavior
  • good behavior

Work

  • professional behavior
  • code of conduct
  • workplace behavior
  • performance review

Science

  • animal behavior
  • human behavior
  • behavioral study
  • observed behavior

Technology

  • user behavior
  • online behavior
  • system behavior
  • software behavior

Law

  • good behavior
  • criminal behavior
  • antisocial behavior
  • legal conduct

Conversation Starters

"What do you think is the most important behavior for a leader to have?"

"Have you ever noticed any strange behavior in your pets?"

"How does your behavior change when you are in a formal setting?"

"Do you think people's behavior is mostly learned or innate?"

"What kind of online behavior do you find most annoying?"

Journal Prompts

Describe a time when you had to be on your best behavior. How did you feel?

Write about a person you admire and describe their typical behavior toward others.

Reflect on a habit or behavior you would like to change in yourself.

Discuss how social media has changed the way people behave in public.

Observe an animal for ten minutes and write down all the behaviors you see.

Frequently Asked Questions

10 questions

In general English, it is uncountable. You say 'His behavior was good.' In scientific or psychological contexts, it can be countable, as in 'different human behaviors'.

The only difference is spelling. 'Behavior' is American English, and 'behaviour' is British English. They have the same meaning and pronunciation.

It is better to say 'bad behavior' (uncountable) or 'an instance of bad behavior.' Native speakers rarely say 'a bad behavior'.

You can use it to describe how the car handles or reacts to conditions, e.g., 'The car's behavior on wet roads is excellent'.

It means to act as politely and correctly as possible, usually to impress someone or follow rules in a special situation.

It is a neutral word. It can be used in casual conversation ('I like your behavior') and in very formal academic papers ('The behavior of the particles').

It is a branch of science, such as psychology or sociology, that deals primarily with human action and often seeks to generalize about human behavior in society.

Yes, 'animal behavior' is a major field of study. It refers to all the ways animals interact with other members of their species, other species, and their environment.

It refers to actions that are harmful or lack consideration for the well-being of others, often violating social norms or laws.

Conduct is more formal and usually refers to how someone behaves in a professional or official role, often according to a specific code.

Test Yourself 180 questions

writing

Write a sentence about a dog's behavior.

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writing

Describe a time you had to be on your best behavior.

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writing

Explain what 'consumer behavior' means in your own words.

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writing

Write a short paragraph about professional behavior in the office.

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writing

Compare 'behavior' and 'manners'.

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writing

Write a sentence using the word 'erratic' and 'behavior'.

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writing

Describe the behavior of someone you admire.

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writing

What is 'antisocial behavior'? Give an example.

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writing

Write a sentence using 'behavior toward'.

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writing

Explain why 'behavior' is important in a classroom.

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writing

Use the word 'exemplary' in a sentence about behavior.

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writing

Write a sentence about the behavior of a computer or software.

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writing

Describe 'online behavior' and why it matters.

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writing

Write a sentence using 'behavioral patterns'.

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writing

What does it mean to 'modify' behavior?

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writing

Write a sentence about a child's misbehavior.

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writing

Describe the behavior of a crowd at a sports event.

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writing

Use 'demeanor' in a sentence related to behavior.

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writing

Write a sentence about 'learned behavior'.

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writing

Explain the phrase 'on your best behavior'.

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speaking

Describe your behavior when you are nervous.

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speaking

How should a student behave in a classroom?

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speaking

Talk about a time you saw an animal acting strangely.

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speaking

What does 'professional behavior' mean to you?

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speaking

How do you react to bad behavior from others?

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speaking

Why is it important to have a code of conduct in a company?

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speaking

Do you think online behavior is different from real-life behavior?

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speaking

What is 'good behavior' for a pet dog?

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How can we encourage good behavior in children?

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Describe the behavior of a person you find very polite.

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Talk about the behavior of a crowd at a concert.

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speaking

What are some 'behavioral patterns' you have noticed in yourself?

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speaking

Is 'behavior' something we can always control?

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What kind of behavior do you expect from a doctor?

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How does culture influence behavior?

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speaking

What is 'risky behavior'? Give an example.

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speaking

How do you feel when you have to be on your 'best behavior'?

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speaking

Why do scientists study animal behavior?

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speaking

Describe a time someone's behavior surprised you.

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speaking

What is the most annoying behavior someone can have in a cinema?

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listening

Listen to the description: 'The teacher gave the student a gold star for his actions today.' Which word could replace 'actions'?

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listening

Listen: 'I'll be on my best behavior at the dinner.' What is the speaker promising?

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listening

Listen: 'The erratic behavior of the machine was a concern.' How was the machine acting?

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listening

Listen: 'Marketing teams look at consumer behavior.' What are they looking at?

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listening

Listen: 'His behavior toward the staff was exemplary.' Was his behavior good or bad?

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listening

Listen: 'The study of human behavior is fascinating.' What is fascinating?

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listening

Listen: 'She was punished for her misbehavior.' Why was she punished?

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listening

Listen: 'The software update improved the behavior of the system.' What happened to the system?

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listening

Listen: 'We need to monitor the behavior of the volcano.' What are they doing?

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listening

Listen: 'Professional behavior is expected.' Where is this likely said?

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listening

Listen: 'The child's behavior was disruptive.' What did the child do?

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listening

Listen: 'He has some strange behavioral patterns.' What does he have?

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listening

Listen: 'The behavior of the crowd was unpredictable.' Could you guess what the crowd would do?

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listening

Listen: 'Good behavior is its own reward.' What does this mean?

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listening

Listen: 'The ethologist studied the behavior of the wolves.' Who was studied?

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/ 180 correct

Perfect score!

Related Content

More Social words

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C1

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abhospence

C1

A rare or formal term describing the state or act of lacking hospitality, or the deliberate withdrawal of a welcoming attitude towards guests or outsiders. It refers to a cold, inhospitable atmosphere or a specific instance where a host fails to provide expected comforts or kindness.

abjudtude

C1

The state or quality of being formally rejected, cast off, or disowned through an authoritative or judicial decision. It refers to a condition of absolute renunciation where a person or entity is stripped of their previous status or rights.

abphobship

C1

A formal adjective describing a systemic and deep-seated aversion to institutional hierarchies or organized authority figures. It is frequently applied in sociological and organizational contexts to describe individuals or movements that intentionally distance themselves from formal power structures.

abstinence

B2

Abstinence is the practice of voluntarily refraining from satisfying an appetite or craving, most commonly for alcohol, food, or sexual activity. It often implies a conscious, self-imposed choice to avoid certain behaviors for health, religious, or moral reasons.

abtactship

C1

The state or quality of being detached from physical contact or tangible interaction, often used in theoretical or philosophical contexts to describe non-tactile relationships. It refers to a condition where one is removed from the immediate physical presence of an object or person.

abtrudship

C1

To forcefully impose one's leadership, authority, or specific set of rules onto a group without their consent or prior consultation. It describes the act of thrusting a structured way of doing things upon others in a dominant or intrusive manner.

abvictious

C1

To strategically yield or concede a minor position or advantage in order to ensure a greater ultimate victory. It describes a sophisticated form of success achieved through intentional, calculated loss or withdrawal.

abvolism

C1

The philosophical or psychological practice of intentionally distancing oneself from established social norms, family structures, or institutional obligations to achieve total individual autonomy. It characterizes a state of detachment where an individual 'flies away' from conventional expectations to live according to purely personal principles.

acceptance

B2

Acceptance is the act of agreeing to an offer, plan, or invitation, or the process of being received into a group or society. It also refers to the willingness to tolerate a difficult situation or the state of being approved by others.

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