77 entries under quiet topic. ×

3
imperceptible(adjective, dull, weak, soft)
2
mumbled(soft, low, unclear, hazy)
2
obscure(adjective, weak, soft, flat)
2
quieted(verb, adjective, close, soft)
2
silent(adjective, close, soft, gentle)
2
soundless(adjective, close, soft, low)
2
still(adjective, close, soft, gentle)
2
suppressed(verb, adjective, stifled)
2
toned down(verb, expression, adjective, phrasal verb)
2
whispering
1
buttoned up(expression, adjective, close, soft)
1
clammed up(expression, adjective, close, soft)
1
close(adjective, soft, low, peaceful)
1
close-mouthed(adjective, close, soft, low)
1
could hear a pin drop(expression, adjective, idiom, close)
1
hushful(adjective, close, soft, low)
1
inobtrusive(adjective, soft, low)
1
low-pitched(adjective, dull, close, weak)
1
mum(soft, low, silent, voiceless)
1
mumbling
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APASmart Define. (2016). muffled thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/muffled/thesaurus/synonyms
ChicagoSmart Define. 2016. "muffled thesaurus" https://smartdefine.org/muffled/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, muffled thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/muffled/thesaurus/synonyms>.
MLASmart Define. "muffled thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/muffled/thesaurus/synonyms>