put one's foot in one's mouth

Attested from 1887; from earlier put one's foot in it.

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put one's foot in one's mouth (third-person singular simple present puts one's foot in one's mouth, present participle putting one's foot in one's mouth, simple past and past participle put one's foot in one's mouth)

1. (idiomatic) To misspeak; to say something embarrassing or wrong, or to make a mistake in public, or a social blunder, that is embarrassing or offensive.

   Synonyms: put one's foot in it, stick one's foot in one's mouth, stick one's foot in it

   I really put my foot in my mouth during the interview.

• foot-in-mouth disease

• a closed mouth gathers no feet