21 entries under restrained topic. ×

25
silent(adjective, close, quiet, soft, low)
18
quiet(adjective, soft, low, still)
15
taciturn(adjective, close, quiet, still)
13
tight-lipped(adjective, quiet, aloof, reserved)
9
reserved(adjective, close, quiet, still)
9
uncommunicative(adjective, close, quiet, soft, low)
9
reticent(adjective, close, quiet, still)
9
secretive(adjective, quiet, reticent, silent)
4
close(adjective, quiet, soft, still)
4
close-mouthed(adjective, quiet, aloof, reserved)
4
closemouthed(adjective, close, quiet, soft, low)
2
bashful(adjective, quiet, soft, awkward)
2
clammed up(expression, adjective, quiet, reticent)
2
unforthcoming(adjective, close, quiet, aloof)
1
dummied up(expression, adjective, quiet, soft)
1
unspeaking(adjective, quiet, still, silent)
0
cagey(quiet, discreet)
0
discreet
0
dried up(expression, quiet, discreet)
0
hesitant(quiet, discreet)
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APASmart Define. (2015). mum thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mum/thesaurus/synonyms
ChicagoSmart Define. 2015. "mum thesaurus" https://smartdefine.org/mum/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, mum thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mum/thesaurus/synonyms>.
MLASmart Define. "mum thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/mum/thesaurus/synonyms>