Behavior or Behaviour: Which Spelling Is Correct?

Introduction

Behavior and behaviour are both correct spellings of the same English word. The difference is mainly based on the variety of English being used. Behavior is the standard spelling in American English, while behaviour is the standard spelling in British English.

Both forms refer to the way a person, animal, group, or sometimes a thing acts or responds. They have the same basic meaning and are pronounced essentially the same way.

So, if you are wondering whether to write behavior or behaviour, the answer depends on your audience and the English style you are following.

Spelling	English Variety	Example
Behavior	American English	His behavior was respectful.
Behaviour	British English	His behaviour was respectful.

The important point is that neither spelling is inherently wrong. Choose the form that matches your intended variety of English and use it consistently.

What Does Behavior or Behaviour Mean?

Behavior or behaviour means the way a person or other living thing acts, responds, or conducts itself in a particular situation.

For example:

• The teacher praised the student’s behavior.
• The teacher praised the student’s behaviour.
• The dog’s behavior changed after the move.
• Scientists studied the behaviour of the animals.
• The manager was concerned about his employee’s behavior.

The word can describe ordinary actions as well as more specific patterns of conduct.

It can be used for human behavior, animal behavior, social behavior, criminal behavior, consumer behavior, and many other types.

The word can also be used in scientific contexts to describe how an animal, substance, system, or other thing acts or responds under particular conditions. Oxford and Cambridge both recognize these broader uses.

In simple terms:

Behavior/behaviour = the way someone or something acts or responds.

Is Behavior American or British English?

Behavior is the standard American English spelling.

American English removes the u found in the British spelling:

• behavior
• behaviors
• behavioral

For example:

The child’s behavior improved after several weeks.

Scientists are studying animal behavior.

His behavior at work was professional.

If you are writing for a primarily American audience, behavior will normally be the appropriate spelling.

The same American spelling is also commonly encountered in American academic, business, technical, and online writing.

Cambridge identifies behavior as the US spelling of British behaviour.

Is Behaviour American or British English?

Behaviour is the standard British English spelling.

British English keeps the u:

• behaviour
• behaviours
• behavioural

Examples:

His behaviour was polite and respectful.

The teacher noticed a change in the student’s behaviour.

Researchers examined the behaviour of the animals.

You will commonly encounter behaviour in British English materials, including many educational and formal contexts that follow British spelling conventions.

Oxford lists behaviour as the main form and identifies behavior as the US English spelling.

What Is the Difference Between Behavior and Behaviour?

The main difference is spelling, not meaning.

Here is the simplest comparison:

Feature	Behavior	Behaviour
Main variety	American English	British English
Meaning	Same	Same
Part of speech	Noun	Noun
Pronunciation	Essentially the same	Essentially the same
Plural	Behaviors	Behaviours
Adjective	Behavioral	Behavioural
Meaning difference	None	None

For example:

American English:

The student’s behavior was excellent.

British English:

The student’s behaviour was excellent.

The message is the same. Only the spelling changes.

This is similar to other British and American spelling differences such as:

• color/colour
• favor/favour
• honor/honour
• neighbor/neighbour

However, spelling patterns should not be applied blindly to every word. It is better to learn the accepted spelling of each word.

How Do You Pronounce Behavior and Behaviour?

Behavior and behaviour are Pronounced essentially the same.

A common pronunciation is:

Behavior: /bɪˈheɪ.vjɚ/
Behaviour: /bɪˈheɪ.vjə(r)/

A simple learner-friendly approximation is:

bi-HAY-vyer

The spelling looks different because of the additional u in behaviour, but that extra letter does not create a completely different pronunciation.

Cambridge provides pronunciation information for both forms, while Oxford lists the pronunciation of behaviour and identifies behavior as the US form.

If you are learning English, the most important thing to remember is:

Behavior and behaviour have different spellings but essentially the same pronunciation.

Behavior and Behaviour in Sentences

Seeing both forms in context makes the difference much easier to understand.

School

American English:

The teacher was pleased with the student’s behavior.

British English:

The teacher was pleased with the student’s behaviour.

Workplace

American English:

His professional behavior impressed the manager.

British English:

His professional behaviour impressed the manager.

Family

American English:

Parents often influence their children’s behavior.

British English:

Parents often influence their children’s behaviour.

Animals

American English:

The researchers observed the behavior of wild birds.

British English:

The researchers observed the behaviour of wild birds.

Psychology

American English:

The study examines human behavior.

British English:

The study examines human behaviour.

Technology

The engineers investigated the behavior of the software under heavy load.

The British version would use:

The engineers investigated the behaviour of the software under heavy load.

These examples show that the context does not change. Only the regional spelling changes.

Behavior vs Behaviour in Academic Writing

Both spellings can be correct in academic writing. The important thing is to follow the English variety and style requirements of your institution, journal, publisher, or instructor.

If your academic work follows American English, use:

behavior

If it follows British English, use:

behaviour

For example, an American English paper might say:

This study investigates consumer behavior among university students.

A British English paper might say:

This study investigates consumer behaviour among university students.

The biggest mistake is not choosing one particular spelling. The bigger problem is switching between spelling systems without a reason.

For example, avoid writing:

The study examines consumer behavior and changes in consumer behaviour.

If both refer to the same concept, choose the spelling appropriate for your writing style and maintain it throughout the document.

When a school, university, journal, employer, or publisher provides a style guide, follow that guide first.

Behavior or Behaviour in Different Countries

English spelling varies between countries, but regional usage is not always an absolute rule for every individual, organization, publisher, or style guide.

A general guide is:

Region	Common form
United States	behavior
United Kingdom	behaviour
Australia	behaviour
New Zealand	behaviour
Canada	behaviour is common
India	behaviour is common in British-influenced formal English
Pakistan	behaviour is common in British-influenced formal English

The safest approach is to consider the actual English style required by your audience or organization, rather than assuming every writer in a particular country always uses one form.

For example, an Indian or Pakistani writer creating content specifically for an American publication may reasonably use behavior because the publication follows American English.

Likewise, a US-based writer preparing a document for a British organization may need to use behaviour.

Therefore:

Audience and style requirements can matter more than the writer’s location.

Behavioral or Behavioural: Which Spelling Is Correct?

The same American-British spelling difference appears in the related adjective.

American English:

behavioral

British English:

behavioural

Both mean something connected with behavior or behaviour.

Examples:

• behavioral psychology
• behavioural psychology
• behavioral science
• behavioural science
• behavioral problems
• behavioural problems
• behavioral changes
• behavioural changes

For example:

American English:

She is studying behavioral psychology.

British English:

She is studying behavioural psychology.

Oxford specifically lists behavioural and identifies behavioral as the US English form.

So the same basic rule applies:

Behavior → behavioral
Behaviour → behavioural

Behaviors or Behaviours: Which Plural Is Correct?

The plural form follows the same regional spelling pattern.

American English

behavior → behaviors

Example:

Researchers identified several unusual behaviors.

British English

behaviour → behaviours

Example:

Researchers identified several unusual behaviours.

Both plural forms are correct within their respective spelling systems.

Notice that the difference is simply the retention or removal of u:

behavior → behaviors

behaviour → behaviours

Cambridge’s entries also show both singular and plural usage in their respective English varieties.

Common Mistakes With Behavior and Behaviour

English learners sometimes treat one spelling as correct and the other as a spelling mistake. That is not accurate.

Here are some common mistakes to avoid.

Mistake 1: Saying “behaviour” is always wrong

This is incorrect.

Behaviour is the standard British English spelling.

Mistake 2: Saying “behavior” is always wrong

This is also incorrect.

Behavior is the standard American English spelling.

Mistake 3: Mixing spelling systems randomly

A document should normally maintain a consistent spelling style.

If you are writing in American English, use behavior and related American forms consistently where appropriate.

If you are writing in British English, use behaviour and related British forms consistently where appropriate.

Mistake 4: Thinking the meaning is different

There is no ordinary meaning difference between behavior and behaviour.

They are regional spelling variants of the same word.

Mistake 5: Treating the extra “u” as a pronunciation difference

The additional u in behaviour does not normally make it a completely different-sounding word.

Mistake 6: Using both spellings just to target keywords

If you are writing an article, do not repeatedly insert both versions in unnatural sentences simply because people search for both.

Write naturally and explain the spelling difference where it is genuinely useful.

Related To Another Article: https://grammixo.com/since-vs-sense/

Common Misspellings of Behavior and Behaviour

Because behavior and behaviour look similar, learners sometimes create incorrect spellings.

Examples of incorrect forms include:

• behavour ❌
• behavor ❌
• behaviourr ❌
• behaivor ❌
• beaviour ❌

The accepted forms are:

• behavior ✅
• behaviour ✅

Remember that these two forms are not competing “correct” and “incorrect” spellings. They are regional variants.

A simple memory trick is:

American English: behavior
British English: behaviour

If you normally write British English, remember the u.

If you normally write American English, leave the u out.

Which Spelling Should You Use?

The best spelling depends on the English variety you are expected to use.

Use “behavior” when:

• You are writing in American English.
• Your US-based audience expects American spelling.
• Your school or organization follows American English.
• Your publication’s style guide requires American spelling.
• You are following a specific American English editorial standard.

Use “behaviour” when:

• You are writing in British English.
• Your audience expects British spelling.
• Your institution follows British English.
• Your publisher or client requires British spelling.
• Your style guide specifies British spelling.

If no specific requirement exists, think about your target audience and keep your spelling consistent.

For example, if your article is aimed primarily at US readers, behavior may be the natural choice.

If your content follows British English conventions, behaviour is appropriate.

The important lesson is not that one spelling is “better.”

Choose the spelling that matches your English variety, audience, and style requirements.

People Also Ask

Final Answer: Behavior or Behaviour?

Behavior and behaviour are both correct.

The difference is regional:

• Behavior = American English
• Behaviour = British English

Both words have the same basic meaning, and their Pronunciation is essentially the same. The same spelling difference appears in related forms such as behavioral/behavioural and behaviors/behaviours.

If you are unsure which one to choose, check the English variety required by your audience, school, employer, publisher, or style guide.

The most important rule is simple:

Use the spelling that matches your chosen English variety, and stay consistent.