Which to use
“behaviour” is a noun and “behavioural” is an adjective - they look or sound alike but fill different roles in a sentence.
- #3,864
- “behaviour” frequency rank
- #19,022
- “behavioural” frequency rank
- 22886
- confusion score
Side-by-Side Comparison
| Feature | behaviour | behavioural |
|---|---|---|
| Definition | British standard spelling of behavior. | Of or pertaining to behaviour. |
Letter map: behaviour vs behavioural
Shared letters muted; letters that set behaviour and behavioural apart highlighted. Shared run: 9.
Part-of-speech tell for behaviour / behavioural
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: behaviour is anoun and behaviouralanadjective. On the page they differ by 2 extra letter(s) - “behaviour” sits inside “behavioural”. Our composite confusion score for this pair is 22886, derived from the frequency rank of both members and their visual similarity.
behaviour is recorded at frequency rank #3,864, classified as anoun. behavioural is at rank #19,022, tagged as anadj, pronounced /bɪˈheɪvjərəl/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 22886, this pair ranks #413,325 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of behaviour vs behavioural
Shared letters: abehioruv. Private to "behaviour": -. Private to "behavioural": l.
"behaviour" · 9 letters · shape CVCVCVVVC · "behavioural" · 11 letters · shape CVCVCVVVCVC
Known mistypes of this pair
- behaviour ← bbehaviour · beahviour · behaivour · behavioru · behaviourr · behaviuor · behavoiur · behavviour
- behavioural ← bbehavioural · beahvioural · behaivoural · behaviorual · behaviouarl · behaviourall · behaviourla · behaviourral
Frequently Asked Questions
Do "behaviour" and "behavioural" mean the same thing in a sentence?
Which is more common, "behaviour" or "behavioural"?
After this comparison
Pair "behaviour" vs "behavioural" is on the table, pick a follow-up below.
- Full dictionary entry for "behaviour" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "behavioural" - compare definitions side by side with the headword page. Word entry
- This pair ranks #413,325 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "behaviour" and "behavioural" also get mixed up with nearby pairs, the highest-scored neighbour is "behavioral vs behavioural". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #413,325 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.