lose one's reason

phrase

old-fashioned
: to become insane

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lose one's place
lose one's reason
lose one's shirt
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Cite this Entry

“Lose one's reason.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lose%20one%27s%20reason. Accessed 9 Mar. 2026.

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