to tell sb to do what they are threatening to do, because you believe that they will not be cruel or brave enough to do it
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to tell sb to do what they are threatening to do, because you believe that they will not be cruel or brave enough to do it
-We called his bluff. -You solve nothing.
She really thought she'd call his bluff.
Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición