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call someone's bluff

idiom

: to challenge someone's statement or threat because it is not believed
When she threatened to quit her job, her boss called her bluff and told her she could leave if she wanted to.

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“Call someone's bluff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/call%20someone%27s%20bluff. Accessed 28 Nov. 2025.

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