mutter
Nouns
- (n) a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech murmur, murmuration, murmuring, mussitation, muttering,
- (n) a complaint uttered in a low and indistinct tone grumble, grumbling, murmuring, muttering, murmur,
Verbs
- (v) talk indistinctly; usually in a low voice mumble, mussitate, maunder,
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(v) make complaining remarks or noises under one's breath
- she grumbles when she feels overworked