1
mimic
1
mousy(quiet, soft, still, silent, hushed)
1
muffled(quiet, soft, low, silent, voiceless)
1
mummer
1
not forthcoming(expression, adjective, quiet, silent, tight-lipped)
1
not talkative(expression, adjective, quiet, reticent, silent)
1
parent
1
quiet speechless(expression, still, hushed, soundless)
1
quietude
1
rest
1
restrained(quiet, still, reticent, silent, discreet)
1
sententious(aloof, reserved, reticent, uncommunicative)
1
short
1
shush
1
silentious(still, hushed, soundless)
1
snug
1
sparing(aloof, reserved, reticent, uncommunicative)
1
sparing of words(expression, idiom)
1
stillness
1
stricken dumb
11 years ago|7.4k views|share |citing 
APASmart Define. (2015). mum thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/mum/thesaurus/synonyms
ChicagoSmart Define. 2015. "mum thesaurus" https://smartdefine.org/mum/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, mum thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/mum/thesaurus/synonyms>.
MLASmart Define. "mum thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/mum/thesaurus/synonyms>