3
purring
3
racy
3
rattling(verb, adjective, rumbling, whirring)
3
rumbling(noun, verb, adjective, rumbling)
3
whispering(noun, verb, low, buzz, babble)
3
whizzing
2
HUM
2
rolling(verb, adjective, rumbling)
2
beating(verb, adjective, rumbling)
2
brisk(adjective, lively)
2
chattering(verb, adjective, rumbling)
2
clattering(verb, rumbling)
2
drone(noun, low, buzz)
2
fetid(adjective, foul, stinking, smelly, reeking)
2
hopping(adjective, lively)
2
lively
2
mumble(noun, low, buzz)
2
popping(verb, sound, description, noise)
2
reverberating(verb, adjective, rumbling)
2
sing
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APASmart Define. (2015). humming thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/humming/thesaurus/synonyms
ChicagoSmart Define. 2015. "humming thesaurus" https://smartdefine.org/humming/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, humming thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/humming/thesaurus/synonyms>.
MLASmart Define. "humming thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/humming/thesaurus/synonyms>