Word Explorer
Children's Dictionary
Help
Help
Help
 
Advanced Dictionary        

put one's foot in one's mouth

 
See:
foot
part of speech: phrase
definition: to say something regrettable, sometimes revealing one's own or another's secret by accident or revealing an opinion or assumption that should not have been stated openly.
He really put his foot in his mouth when he made that comment about his boss. You should have seen how embarrassed he was when he found out that he'd been talking to his boss's wife.