1
scummed
1
secretive(adjective, close, quiet, soft, low)
1
sepulchral(adjective, dull, deep, muted, echoing)
1
shadowy(adjective, dull, weak, soft, gentle)
1
sheathed
1
shelled
1
shielded
1
shrouded
1
sleeping
1
slight(adjective, weak, pale, faded)
1
slow
1
sober(adjective, quiet, soft, obscure, flat)
1
soft-spoken(adjective, quiet)
1
somber(adjective, soft, obscure, flat, dark)
1
sooty(adjective, soft, obscure, flat, dark)
1
sordo
1
speechless(adjective, close, quiet, soft, obscure)
1
strangled(verb, adjective, quiet, restrained, suppressed)
1
subfusc(adjective, soft, obscure, flat, dark)
1
submerged
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APASmart Define. (2016). muffled thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/muffled/thesaurus/synonyms
ChicagoSmart Define. 2016. "muffled thesaurus" https://smartdefine.org/muffled/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, muffled thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/muffled/thesaurus/synonyms>.
MLASmart Define. "muffled thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/muffled/thesaurus/synonyms>