11
muttering(verb, stammering)
8
mumble(noun, verb)
7
whispering(noun, verb, adjective, quiet)
7
maundering(adjective, confused, rambling, disjointed)
5
murmuring(noun, verb)
4
gibbering
4
gumming(noun, verb)
4
inarticulate(adjective, unable)
4
stammering(verb, adjective, confused, rambling, stammering)
4
stuttering(verb, adjective, confused, rambling, stammering)
3
grumbling
3
incoherent(adjective, confused, rambling, unintelligible, disjointed)
3
mouthing
3
murmur
3
mutter
2
low(adjective, quiet)
2
awkward
2
babbling
2
drone
2
droning
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APASmart Define. (2015). mumbling thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/mumbling/thesaurus/synonyms
ChicagoSmart Define. 2015. "mumbling thesaurus" https://smartdefine.org/mumbling/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, mumbling thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/mumbling/thesaurus/synonyms>.
MLASmart Define. "mumbling thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/mumbling/thesaurus/synonyms>