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stake one's life on (something)

idiom

: to be absolutely sure of (something)
That's the man who robbed the bank. I would stake my life on it.

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“Stake one's life on (something).” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stake%20one%27s%20life%20on%20%28something%29. Accessed 27 Nov. 2025.

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