mouth vs shoot one's mouth off

Other hyponyms of mouth include read, phonate, vocalise, vocalize, troll, begin, lip off, shout, whisper, peep, speak up, snap, snarl, enthuse, speak in tongues, swallow, verbalise, verbalize, whiff, talk about, talk of, blubber, blubber out, drone, drone on, bumble, falter, stammer, stutter, rasp, blunder, blunder out, blurt, blurt out, ejaculate, inflect, modulate, tone, deliver, present, generalise, generalize, blab, blabber, chatter, clack, gabble, gibber, maunder, palaver, piffle, prate, prattle, tattle, tittle-tattle, twaddle, chatter, jaw, rattle on, yack, yack away, yap away, open up, snivel, whine, murmur, maunder, mumble, mussitate, mutter, slur, bark, bay, jabber, mouth off, rabbit on, rant, rave, spout, hiss, sibilate, siss, sizz, cackle, babble, chant, intone, tone, gulp, sing, talmbout.