shooting one's mouth off

Verb

shoot one's mouth off (third-person singular simple present shoots one's mouth off, present participle shooting one's mouth off, simple past and past participle shot one's mouth off)

1. (slang) To make reckless or exaggerated statements.
   • George Jessel . . . is still shooting his mouth off as though nothing mattered except his own gift for wise-cracks.1943 July 16, David Deutsch, “Heard in the Lobbies”, in The Canadian Jewish Chronicle, retrieved 07 Jan 2010

   Synonyms:

   mouth off, shoot from the lip, shoot off at the mouth, shoot off one's mouth