Quick answer: “Jump the Gun” means to act too hastily; to start something before the right time.
Jump the gun — to act too hastily; to start something before the appropriate or agreed time. It implies impatience or premature action that leads to problems.
Origin & History
The idiom originates from athletics. In track and field races, a starting pistol (the "gun") is fired to signal the start. A runner who begins moving before the gun fires has "jumped the gun" — a false start that disqualifies them. The phrase entered figurative use in the early 20th century and is now widely used beyond sports.
The expression captures the idea of impatience and acting before the correct moment, with the implication that doing so will cause problems or require backtracking. Figurative expressions of this kind are the sort of entry catalogued by major reference works such as the Cambridge Dictionary, which track how idiomatic meanings develop and spread.
Example Sentences
| Sentence | Context |
|---|---|
| Don't jump the gun — wait until we have all the information. | Advising patience |
| They jumped the gun by announcing the merger before it was signed. | Business announcement |
| I jumped the gun and booked the flights before the dates were confirmed. | Travel planning mistake |
| The press jumped the gun and published the story too early. | Media reporting |
| Don't jump the gun with congratulations — the results aren't final yet. | Premature celebration |
Use It in Conversation
Dialogue Example
Chris: I've already told everyone we got the contract!
Nat: You may have jumped the gun a bit — we haven't received the signed paperwork yet.
Chris: Oh no. I hope I haven't spoken too soon.
How to Use It
This idiom is used when someone acts or speaks before the right moment. It can be used to warn ("don't jump the gun"), describe a past mistake ("she jumped the gun"), or comment on someone else's premature action. It often implies that the hasty action created a problem or embarrassment.
Common Mistakes
Mistakes to Avoid
He jumped a gun and sent the email early.
He jumped the gun and sent the email early. — Always use 'the gun', not 'a gun'.
She jumped the gun to act too fast.
She jumped the gun by acting too fast. — Use 'by' + gerund to explain the action.
Similar Idioms
Practise This Idiom
Want to understand the grammar behind this? Explore our Grammar guides.
Quick Check: Jump the Gun
2 questions — test what you just learned.
1. What does “Jump the Gun” mean?
2. Complete the sentence: “Don't _____ — wait until we have all the information.”
Frequently Asked Questions
What does "jump the gun" mean?
"Jump the gun" means to act too hastily or to start something before the right or agreed time. It implies impatience or premature action.
Where does "jump the gun" come from?
The idiom comes from athletics. In track races, a starting pistol signals the start. A runner who begins before the gun fires has made a false start — they have "jumped the gun". The figurative use became popular in the early 20th century.
Can you give an example of "jump the gun" in a sentence?
Example: "Don't jump the gun — wait until we have all the information." It warns against acting before the time is right.
Is "jump the gun" formal or informal?
It is neutral to informal. It is suitable in everyday conversation, emails, and semi-formal writing.
What CEFR level is "jump the gun"?
This idiom is appropriate for B1–B2 (Intermediate to Upper-Intermediate) learners and is widely used in both spoken and written English.
What are common mistakes when using "jump the gun"?
A common mistake is saying "jump a gun". Always use "the gun". Also ensure the context shows premature action, not just speed.
What idioms are similar to "jump the gun"?
Similar idioms include: "get ahead of yourself" (move too fast), "count your chickens before they hatch" (assume success prematurely), and "let the dust settle" (wait for the right moment).
Can "jump the gun" be used in professional writing?
Yes, in semi-formal contexts. For example: "The team may have jumped the gun by announcing the product before testing was complete."
How do I practise idioms like "jump the gun"?
Try LexFizz's Flash Cards and Flip Tiles exercises. Write sentences about times someone acted too soon and notice the idiom in news and sports coverage.
Does "jump the gun" mean the same in British and American English?
Yes. "Jump the gun" has the same meaning in both varieties: to act prematurely or before the right time.