6
chatters(noun, verb, tone, rumbles)
5
groans(noun, verb, tone)
5
moans(noun, verb, carp, grouse, actions)
5
rumbles(noun, verb, rumbles)
4
complains
4
grunts(noun, verb, tone)
4
mumbles(noun, verb, tone)
4
murmurs(noun, verb, tone)
4
mutters(verb, tone)
4
rolls(noun, verb, rumbles)
4
thunders(noun, verb, rumbles)
3
chokes(verb, tone)
3
croaks(noun, verb, tone)
3
grouches(noun, verb)
3
growls(noun, verb)
3
hums(noun, verb, rumbles)
3
roars(noun, verb, tone)
3
scolds(verb, tone)
2
beats(noun, verb, rumbles)
2
booms(noun, verb, tone)
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APASmart Define. (2015). grumbles thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/grumbles/thesaurus/synonyms
ChicagoSmart Define. 2015. "grumbles thesaurus" https://smartdefine.org/grumbles/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, grumbles thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/grumbles/thesaurus/synonyms>.
MLASmart Define. "grumbles thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/grumbles/thesaurus/synonyms>