[shoot] {oneself} in the foot
1
to unintentionally do something that harms oneself or one's own interests
The idiom "shoot oneself in the foot" has its origins in military history, where soldiers were sometimes prone to accidentally shooting themselves in the foot while handling a firearm. The phrase now means to do something that ends up harming one's own interests or goals. This phrase is often used to describe situations where someone makes a mistake or takes an action that has negative consequences for themselves.
- He always shoots himself in the foot by speaking without thinking first.
- If you don't double-check your work, you will end up shooting yourself in the foot.
- She is shooting herself in the foot by missing all her deadlines.
- The company shot itself in the foot by releasing a faulty product that damaged their reputation.
- They have shot themselves in the foot by not preparing for the upcoming exam.