6
undertone(noun, low, hint, suggestion, trace)
6
speak(verb, state, express, talk, say)
6
splutter(verb, stammering, stammer)
5
bark(verb, shout, threat)
5
breathe(verb, utter, murmur, sigh)
5
drawl(go, talk, convey, chatter, chat)
5
gibber(verb, babble, stammering)
5
gripe(verb, protest, complain, grumble, moan)
5
grumbling
5
lament(noun, verb, whine, groan, lamentation)
5
mouth(state, express, talk, say, utter)
5
rumour
5
sigh(noun, verb, hint, utter, flow)
5
sputter(verb, grumble, mumble, stammering)
5
utter(verb, state, express, reveal, talk)
5
wail(noun, verb, whine, groan, lamentation)
5
whimper(verb, utter, whine, groan, whisper)
4
cry(verb, expression, speech, voice, singing)
4
exclaim(verb, state, express, say, voice)
4
gabble
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APASmart Define. (2015). mutter thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/mutter/thesaurus/synonyms
ChicagoSmart Define. 2015. "mutter thesaurus" https://smartdefine.org/mutter/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, mutter thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/mutter/thesaurus/synonyms>.
MLASmart Define. "mutter thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/mutter/thesaurus/synonyms>