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English definition of “act as sth”

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act as sth

verb uk phrasal verb with act   /ækt/ us  
B2 to do a particular job, especially one that you do not normally do: He was asked to act as an adviser on the project. to have a particular effect: Some people say that capital punishment acts as a deterrent.
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(Definition of act as sth phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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