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English definition of “behaviour”

behaviour

noun uk UK (US behavior)   /bɪˈheɪ.vjər/ us    /-vjɚ/
B1 [U] the way that someone behaves: Her behaviour is often appalling. He was notorious for his violent and threatening behaviour. [C or U] specialized biology, chemistry, physics, psychology the way that a person, an animal, a substance, etc. behaves in a particular situation or under particular conditions: His research involved the study of instinctive behaviour in birds. These behaviours can be observed among many children who have lost a parent or other loved one.
(Definition of behaviour from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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