shot off at the mouth

Verb

shoot off at the mouth (third-person singular simple present shoots off at the mouth, present participle shooting off at the mouth, simple past and past participle shot off at the mouth)

1. (idiomatic, informal) To boast, or brag, or talk too much.
   • Don't let [presidential press secretary Ron] Ziegler shoot off at the mouth without our knowledge.2003, Henry Kissinger, Crisis: The Anatomy Of Two Mojor Foreign Policy Crises, page 28
2. (idiomatic, informal) To disclose some information that was supposed to be secret.

   Synonyms:

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