Meaning of “behaviour” - Learner’s Dictionary

behaviour

noun [ U ] UK US behavior us uk /bɪˈheɪvjər/
immoral behaviourirrational behaviourScott's behaviour has improved a lot lately.He was astonished at her behaviour.There's really no need for that sort of behaviour.

B1 the way that you behave:

good/bad behaviour
Did you notice anything odd about his behaviour?

(Definition of “behaviour” from the Cambridge Learner’s Dictionary © Cambridge University Press)