1Say something in a low or barely audible voice, especially in dissatisfaction or irritation.
talk under one's breath, murmur, mumble, whisper, speak in an undertone, speak sotto voce, speak in hushed tonesView synonyms
- ‘he muttered something under his breath’
- ‘“I knew she was a troublemaker,” Rebecca muttered’
- ‘she muttered in annoyance as the keys slid from her fingers’
- 1.1no object Speak privately or unofficially about someone or something; spread rumors.‘when he disappeared, people began to mutter’grumble, moan, complain, grouse, carp, whine, bleatView synonyms
A barely audible utterance, especially one expressing dissatisfaction or irritation.‘a little mutter of disgust’complaint, grumble, moan, mutter, murmur, grouse, objection, protest, protestation, outcry, demur, argument, remonstrance, remonstration, exception, grievance, cavil, quibble, word, soundView synonyms
Late Middle English imitative; compare with German dialect muttern.
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