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act

noun (PERFORMANCE)
 
 
/ækt/

Definition

C2 [S] behaviour that hides your real feelings or intentions: Was she really upset or was that just an act?Faking and pretending [C] a person or group that performs a short piece in a show, or the piece that they perform: a comedy/juggling/trapeze act Our next act is a very talented young musician.Actors and performersSpectacles and performances B1 [C] a part of a play or opera: Shakespeare's plays were written in five acts. The hero does not enter until the second act/Act Two.Parts of plays, shows and films
(Definition of act noun (PERFORMANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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