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English definition of “act”

act

verb
 
 
/ækt/
BEHAVE [I] B1 to behave in a particular way: to act responsibly Jeff's been acting strangely recently. Stop acting like a child!Behaving, interacting and behaviour
DO SOMETHING [I] B2 to do something, especially in order to solve a problem: We have to act now to stop the spread of this disease.Acting and actsDealing with things or people
PERFORM [I, T] B1 to perform in a play or film: He's acted in a number of successful Hollywood films.Acting, rehearsing and performing
(Definition of act verb from the Cambridge Learners Dictionary © Cambridge University Press)
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