64 entries under verb topic. ×

17
complaining(noun, adjective, upset, difficult)
12
rumbling(noun, adjective, rumbling)
11
murmuring(noun, adjective, grumpy, testy)
8
grumble
7
muttering
6
mutter
5
griping(adjective, upset, unhappy, irritable)
5
thundering(adjective, rumbling)
4
whining(noun, adjective, difficult, critical)
4
chattering(adjective, rumbling)
4
growling
3
beefing
3
croaking
3
groaning
3
growl
3
humming(adjective, rumbling)
3
moaning(noun, adjective, critical, grumpy)
3
rolling(adjective, rumbling)
3
scolding
3
throbbing(adjective, rumbling)
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APASmart Define. (2016). grumbling thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/grumbling/thesaurus/synonyms
ChicagoSmart Define. 2016. "grumbling thesaurus" https://smartdefine.org/grumbling/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, grumbling thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/grumbling/thesaurus/synonyms>.
MLASmart Define. "grumbling thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/grumbling/thesaurus/synonyms>