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English definition of “act”

act

verb (PERFORM)    /ækt/
B1 [I or T] to perform a part in a film, play, etc.: Ellis Pike was chosen to act the part of the lawyer in the film. Have you ever acted in a play before?Acting, rehearsing and performing act the fool, martyr, etc. to behave in a particular, usually bad, way: Why are you always acting the fool?Behaving, interacting and behaviour
(Definition of act verb (PERFORM) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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