“Jump the gun” means acting prematurely. Phrase Finder reports an athletic predecessor, “beating the pistol,” in 1905 and a figurative “jump the gun” example in 1921; the engine records those as stages rather than claiming the 1921 citation proves the phrase was invented then.
ReviewedEvidence2 sourcesSectionPhrases & Idioms
Quick answer
It means to act too soon or before the right time.
Key details
Core Meaningact too soon or before the right time
Origin Statusrace-start background supported; predecessor and figurative stages reported
Reported Figurative Use1921 — “jump the gun”
Reported Predecessor1905 — “beating the pistol”
What the evidence supports
Not established
The 1921 citation proves the phrase was coined in 1921.
It is a reported attestation; a surviving citation does not by itself establish a unique coinage event.
Documented timeline
1905
Athletic predecessor reported
Phrase Finder reports “beating the pistol” in a track-and-field context.
secondary reportedconfidence: medium
1921
Figurative phrase reported
Phrase Finder reports a figurative “jump the gun” example in The Iowa Homestead.
secondary reportedconfidence: medium
Variants
beat the gun / beat the pistol
Reported race-start predecessor wording.
jump the gun
Current idiomatic form.
Meaning over time
Race-start predecessor
Premature starts were described with “beat the gun/pistol” wording before the modern idiom is reported.
Premature-action idiom
The modern phrase applies broadly to acting too early.
Further guidance
Athletic Background
Phrase Finder connects the expression to race-start guns and reports “beating the pistol” in a 1905 athletics source.
Meaning
Cambridge defines the idiom as doing something too soon, especially without enough thought.
Origin boundary
The reported citation establishes an attested stage, not a unique inventor or necessarily the absolute first use.
Reported 1921 Usage
Phrase Finder reports figurative “jump the gun” wording in The Iowa Homestead in 1921.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
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