Behaviour or Behavior | Meaning, Spelling & Examples

Behaviour and behavior are different spellings of the noun used to refer to the way someone or something behaves or acts. The spelling depends on the type of English you use.

  • In British English, “behaviour” is standard
  • In American English, “behavior” is correct.

It’s important to choose one type of English and use it consistently. The QuillBot Grammar Checker can help you with this.

Examples: Behaviour or behavior in a sentence
The principal praised the students for their exemplary behaviour/behavior.

Logan’s erratic behaviour/behavior raised concerns among his friends and family.

The study of consumer behaviour/behavior is vital for product development.

Behavior or behaviour is often preceded by an attributive noun (e.g., “animal behavior/behaviour”) or an adjective (e.g., “good behavior/behaviour”).

Behavioural or behavioral

The same distinction applies to related forms of the word, such as the adverb behaviourally or behaviorally and the adjective behavioural or behavioral.

  • In British English, “behaviourally” and “behavioural” are standard.
  • In American English, “behaviorally” and “behavioral” are correct.
Examples: Behaviourally/behaviorally and behavioural/behavioral in a sentence
I realize that dogs and cats are behaviourally/behaviorally very different.

The psychologist specializes in behavioural/behavioral issues in children.

Main differences between American and British English

American and British English are very similar, but there are a few main differences in spelling. Some differences are:

Difference Rule Examples
-or vs -our In American English, many Latin-derived words end in -or. Behavior or behaviour
Color or colour
Favor or favour
Flavor or flavour
Favorite or favourite
Honor or honour
Humor or humour
Labor or labour
Neighbor or neighbour
In British English, these same words end in -our.
-er vs -re In American English, some French, Latin, or Greek words end in -er. Center or centre
Fiber or fibre
Theater or theatre
In British English, these same words end in -re.
-ize vs -ise In American English, many Greek-derived words end in -yze or -ize. Analyze or analyse
Organization or organisation
Realize or realise
Recognize or recognise
In British English, these words end in -yse or -ise.
-ed vs -t In American English, most verbs are regular and form their past tense with the suffix -ed. Burned or burnt
Dreamed or dreamt
Kneeled or knelt
Learned or learnt
Smelled or smelt
Spelled or spelt
Spilled or spilt
In British English, some of these verbs are irregular and form their past tense with the suffix -t.
Single vs double consonant In American English, many words are spelled with a single consonant. Buses or busses
Canceled or cancelled
Counselor or counsellor
Focused or focussed
Labeled or labelled
Modeling or modelling
Traveling or travelling
In British English, these same words are often spelled with a double consonant.
Dropping vs retaining the “e” In American English, “e” is often dropped when forming a noun from a verb Acknowledgment or acknowledgement
Aging or ageing
Judgment or judgement
In British English, the “e” is often retained.
Different verb and noun spellings In American English, most words have identical verb and noun spellings. License or licence
Practice or practise
In British English, some words have different spellings for the verb and noun forms.
Other spelling differences There are many other spelling differences between the two English variants. Airplane or aeroplane
Aluminum or aluminium
Check or cheque
Cozy or cosy
Defense or defence
Dependent or dependant
Enrollment or enrolment
Fulfil or fulfill
Gray or grey
Jewelry or jewellery
Karat or carat
Mold or mould
Offense or offence
Pajamas or pyjamas
Program or programme
Skeptical or sceptical
Tire or tyre

Other interesting articles

If you want to know more about job applications, research, or idioms, make sure to check out some of our other articles with explanations and examples.

Frequently asked questions about behaviour or behavior

Is it behavior or behaviour in Canada?

Behaviour and behavior are two spellings of the same noun. The spelling depends on the type of English.

  • In British English, you use “behaviour.”
  • In American English, you use “behavior.”

Canadian English mainly follows UK guidelines, so behaviour is the correct spelling.

The same difference applies to similar words, such as “honor or honour,” “labor or labour,” “favor or favour,” “favorite or favourite,” “color or colour,” and “humor or humour.”

It’s important to choose one type of English and use it consistently. The QuillBot Grammar Checker can help you with this.

Is it behavior or behaviour in Australia?

Behaviour and behavior are two spellings of the same noun. The spelling depends on the type of English.

  • In British English, you use “behaviour.”
  • In American English, you use “behavior.”

Australian English mainly follows UK guidelines, so behaviour is the correct spelling.

The same difference applies to similar words, such as “honor or honour,” “labor or labour,” “favor or favour,” “favorite or favourite,” “color or colour,” and “humor or humour.”

It’s important to choose one type of English and use it consistently. The QuillBot Grammar Checker can help you with this.

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Julia Merkus, MA

Julia has a bachelor in Dutch language and culture and two masters in Linguistics and Language and speech pathology. After a few years as an editor, researcher, and teacher, she now writes articles about her specialist topics: grammar, linguistics, methodology, and statistics.