4
growling
4
gruff(adjective, negative, bad temper)
4
peevish(adjective, cross, irritable, emotional, vulnerable)
3
beefing
3
bellyaching(noun, critical, grumpy, testy, dissatisfied)
3
bitching
3
carping(noun, adjective, difficult, cross, negative)
3
croaking
3
cross(adjective, difficult, negative, irritable, emotional)
3
discontented(adjective, upset, difficult, cross, unhappy)
3
groaning
3
growl
3
humming(verb, adjective, rumbling)
3
ill-humored(adjective, cross, negative, emotional, vulnerable)
3
irritable(adjective, difficult, cross, negative, critical)
3
moaning(noun, verb, adjective, critical, grumpy)
3
rolling(verb, adjective, rumbling)
3
scolding
3
throbbing(verb, adjective, rumbling)
2
beating(verb, adjective, rumbling)
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APASmart Define. (2016). grumbling thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/grumbling/thesaurus/synonyms
ChicagoSmart Define. 2016. "grumbling thesaurus" https://smartdefine.org/grumbling/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, grumbling thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/grumbling/thesaurus/synonyms>.
MLASmart Define. "grumbling thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/grumbling/thesaurus/synonyms>