3
noiseless(adjective, quiet, soft, low, still)
3
tongueless(silent, muffled, voiceless, aphony)
2
Chrysanthemum morifolium(noun, expression, idiom)
2
Dendranthema grandifloruom
2
aphasic(silent, muffled, voiceless)
2
aphonic(silent, dazed, dumb, amazed, astonished)
2
bashful(adjective, quiet, soft, restrained, awkward)
2
clammed up(expression, adjective, quiet, restrained, reticent)
2
dumbfounded(awkward, silent, dazed, dumb, amazed)
2
dumbstruck(awkward, silent, dazed, dumb, amazed)
2
florist's chrysanthemum
2
laconic(quiet, soft, still, aloof, reserved)
2
muted(adjective, quiet, soft, low, reticent)
2
nonvocal(adjective, quiet, soft, low, still)
2
old woman
2
quiescence
2
succinct(adjective, taciturn)
2
tacit
2
unforthcoming(adjective, close, quiet, restrained, aloof)
2
unsociable(adjective, quiet, still, silent, hushed)
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APASmart Define. (2015). mum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/mum/thesaurus/synonyms
ChicagoSmart Define. 2015. "mum thesaurus" https://smartdefine.org/mum/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, mum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/mum/thesaurus/synonyms>.
MLASmart Define. "mum thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/mum/thesaurus/synonyms>