call sb's bluff definition, meaning - what is call sb's bluff in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “call sb's bluff”

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call sb's bluff

to make someone prove that what they are saying is true, or to make someone prove that they will really do what they say, because you do not believe them
(Definition of call sb's bluff from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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