BEHAVIOUR

UK and ANZ, [US and ANZ] behavior [noun] [U]Behaviour is a way of acting.Her behaviour is often appalling.He was well-known for his violent and threatening behaviour.If someone is on their best behaviour they act with great politeness, esp. for a particular reason.After she threatened to leave him, he was on his best behaviour for a few months.(specialized) In psychology, behaviour therapy is the general name for a form of treatment which tries to change someone's particular unwanted behaviour rather than treating the causes.