smoking gun

noun

: something that serves as conclusive evidence or proof (as of a crime or scientific theory)

Examples of smoking gun in a Sentence

This document is the smoking gun that proves that he was lying.
Recent Examples on the Web
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Jackson’s ex-wife Debbie Rowe was meant to take the stand as a smoking gun for the prosecution but instead revealed no new information and came to Jackson’s defense. Los Angeles Times, 5 June 2026 As the general asks Desdemona (an impeccable Olivia Cygan) to retrieve her handkerchief — an apparent smoking gun of infidelity found in another man’s chambers — his wife promptly spirals and stalls. Thomas Floyd, Washington Post, 3 June 2026 After recording the transmission, Zaminsky takes the evidence to Phil Gordian (Ron Silver), his smarmy boss at NASA’s Jet Propulsion Lab, where his remarkable findings are rejected as a misinterpretation and the smoking gun tape is eventually destroyed. Jeff Spry, Space.com, 31 May 2026 Buyers do not need a smoking gun to ask for a discount on a deal. David Chapman, Forbes.com, 22 May 2026 See All Example Sentences for smoking gun

Word History

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of smoking gun was in 1974

Browse Nearby Words

Cite this Entry

“Smoking gun.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/smoking%20gun. Accessed 9 Jun. 2026.

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