50 entries under utter topic. ×

29
mumble(noun, verb, go, deliver, low)
27
murmur(noun, verb, expression, go, sound)
24
whisper(noun, verb, go, information, express)
11
growl(verb, grumble, babble, whisper)
10
moan(verb, protest, complain, flow)
7
rumble(noun, verb, buzz, grumble)
6
speak(verb, state, express, talk, say)
5
breathe(verb, murmur, sigh)
5
mouth(state, express, talk, say)
5
sigh(noun, verb, hint, flow)
5
whimper(verb, whine, groan, whisper)
4
hiss(verb, murmur, sigh)
4
voice(noun, verb, expression, express, talk)
3
babble(verb, low, flow, chatter)
3
burble(verb, flow, purr, babble)
3
buzz(noun, low, hint, trace)
3
stammer(verb, flow, babble, whisper)
3
stutter(verb, flow, purr, babble)
3
susurrate(verb, flow, babble, whisper)
2
whine(noun, verb, protest, complain)
<123>
11 years ago|14k views|share |citing 
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>