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English definition of “improvise”

improvise

verb [I, T]     /ˈɪmprəvaɪz/
MAKE to make or do something without any preparation, using only the things that are available: For a football, we improvised with some rolled-up socks.Inventing, designing and innovationCreating and producing
PERFORM to play music or say words that you are inventing, not reading or remembering: The show is not scripted - the actors have to improvise.Acting, rehearsing and performingPlaying musicSinging in general
improvisation     /ˌɪmprəvaɪˈzeɪʃən/ noun [C, U]
(Definition of improvise verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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