Put your foot in your mouth
/pʊt jɔː fʊt ɪn jɔː maʊθ/informalUK · US
What does “Put your foot in your mouth” mean?
Put your foot in your mouth means to accidentally say something that embarrasses you or upsets someone else.
An awkward question or a badly timed joke can make you put your foot in your mouth. The mistake is usually accidental: you realise too late that you've embarrassed yourself or upset someone.
In British English, people also say “put your foot in it.” Both versions can sound gently self-mocking.
When do people say it?
Use it when describing an awkward remark, especially when the speaker only realises the mistake afterwards.
“I put my foot in my mouth when I complained about the food before realising she had cooked it.”
Is it formal or informal?
Register: informal. It is most at home in everyday conversation rather than formal writing. Most common in UK and US.
Where does it come from?
The image is of trying to speak with your foot in your mouth: an awkward position for an awkward remark.
Origin confidence: Disputed; treat with caution
How do you say “Put your foot in your mouth” in other languages?
Related idioms
- Spill the beans, To give away a secret.
Last updated 2026-09-16