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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Get yourself a cheap smoking gun and pipe smoke into a container that has the cinnamon syrup, then close the lid. —

Jason O'Bryan, Robb Report, 18 Jan. 2025 There are no smoking guns in Jim’s investigation — only yearslong legal cases that hinge on technical details like the metal composition of a tiny bomb component. —

Alison Herman, Variety, 2 Jan. 2025 Some experts have said the public shouldn’t anticipate smoking guns that upend history. —

Alexis Simendinger, The Hill, 18 Dec. 2024 While all this is going on, Matty is — as always — sneaking around Jacobson-Moore, looking for the smoking gun that will prove Senior buried evidence against Wellbrexa. —

Noel Murray, Vulture, 12 Dec. 2024 See all Example Sentences for smoking gun