blow one's cover

phrase

: to reveal one's real identity

Word History

First Known Use

1965, in the meaning defined above

Time Traveler

The first known use of blow one's cover was in 1965

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blow one's cool

blow one's cover

blow one's mind

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Style

“Blow one's cover.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blow%20one%27s%20cover. Accessed 7 Mar. 2026.

Copy Citation

Last Updated: 24 Feb 2026 - Definition revised

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blow one's cover

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