mumble

To mumble is to talk quietly and indistinctly. When people speak in a mumble, it's hard to understand them.

Mumbling is a way of speaking that’s a little like whispering. Like whispering, mumbling is usually done with a low voice. However, mumbling is harder to understand than a whisper. When we mumble, we don't form out words clearly. Mumbling is the opposite of speaking clearly. Some people mumble because they lack confidence. Others might mumble because they're tired or not feeling well. If you want to be a good public speaker, you'd better learn to not mumble.

Definitions of mumble
  1. verb
    talk indistinctly; usually in a low voice
    synonyms: maunder, mussitate, mutter
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    type of:
    mouth, speak, talk, utter, verbalise, verbalize
    express in speech
  2. verb
    grind with the gums; chew without teeth and with great difficulty
    “the old man had no teeth left and mumbled his food”
    synonyms: gum
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    type of:
    chew, jaw, manducate, masticate
    chew (food); to bite and grind with the teeth
  3. noun
    a soft indistinct utterance
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    type of:
    utterance, vocalization
    the use of uttered sounds for auditory communication
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