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Definition of mumble:

  1. To chew or bite gently, as one without teeth.
  2. To chew something gently with closed lips.
  3. To speak with the lips partly closed, so as to render the sounds inarticulate and imperfect; to utter words in a grumbling indistinct manner, indicating discontent or displeasure; to mutter.
  4. To suppress, or utter imperfectly.
  5. To utter with a low, inarticulate voice.


palaver, chatter, clack, blab, croak, tattle, grumble, mutter, gnarl, murmur, mussitate, prate, gum, tittle-tattle, hem and haw, gabble, whine, maunder, whimper, ramble on, prattle, utter, twaddle, speak indistinctly, gibber, speak inarticulately, piffle, blabber, sounds, rumble.

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