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English definition of “play up”

play up

(CHILD) UK phrasal verb with play     /pleɪ/ verb
When children play up, they behave badly : The boys have been playing up at school again.Bad and wrong behaviourDisobedientObeying and breaking the lawObedient and compliant
(Definition of play up (CHILD) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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