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smoking gun

smoking gun

39 5.3
Clear proof that someone did something wrong
  • noun
  • /ˈsmoʊkɪŋ ɡʌn/
  • Literature
translation icon : prueba concluyente
  • The incriminating email served as the smoking gun in the investigation into the company's fraud.

And there's not some kind of smoking gun evidence for its function.

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Examples

  • But I've got the smoking gun.

  • Samsung can hardly explain away all of Apple's smoking guns for intentional copying.

    Blog text (33)
  • This was the smoking gun for the defense.

  • I think, sir, we have our smoking gun.

  • After just a few weeks of searching, the team discovered a smoking gun.

    Academic text (2004)
  • But I do declare this man is guilty and I have the smoking gun to prove it.

  • These are the famous smoking gun Nixon tapes.

  • For us, the Step Inn bombing was the smoking gun.

  • Edwards' defense will have to explain away the donor's 'smoking gun' note.

    Blog text (17)
  • Strahm's voice on that tape would be our smoking gun.

Synonyms

key evidence
vssmoking gun
5 3.7

Important proof that helps decide a legal case or argument

is definitive proof that directly shows guilt or clear wrongdoing
cogent evidence
vssmoking gun
  • Formal
5.7

Clear and strong information that convinces people it is true

is stronger being conclusive proof that establishes criminal guilt

Antonyms

159 3.4

Not guilty of a crime

How Conclusive

smoking gun
  • Literature
39 5.3
cogent evidence
  • Formal
5.7
circumstantial evidence
  • Specialized
33 6.7
proofless
8.5

Surface Forms

smoking gun singular
smoking guns plural

Morphology

smoking + gun

The literal image of a gun still smoking after being fired evokes immediate, direct proof linking someone to an act, so a learner who knows 'smoking' and 'gun' plus basic real-world knowledge could plausibly infer the phrase refers to clear evidence. However, the meaning is a metonymic/metaphorical extension (object → proof) that relies on pragmatic and cultural inference rather than straightforward compositionality, so it is not fully transparent.

Etymology

The noun smoking gun comes from the image of a gun that is still smoking after being fired, where the visible smoke shows the weapon was just used. So, today smoking gun means 'clear proof' that someone did something wrong.