# behaviour vs behavioural

> English confusable word pair

## The two words

### behaviour
*noun · frequency rank #3,864*
British standard spelling of behavior.

### behavioural
*adjective · IPA /bɪˈheɪvjərəl/ · frequency rank #19,022*
Of or pertaining to behaviour.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/behaviour-vs-behavioural