235 entries under restrained topic. ×

4
closemouthed(adjective, close, quiet, still)
4
imperturbable(adjective, calm, cool, firm, sensible)
4
neutral(adjective, calm, soft, reasonable, gentle)
4
steady(adjective, calm, soft, reasonable, moderate)
4
stoical(adjective, cool, blank, aloof)
4
unenthusiastic(adjective, calm, person, cool, indifferent)
3
curbed(verb, reasonable, still, definite)
3
dumb(adjective, close, quiet, soft, low)
3
low-key(adjective, calm, soft, reasonable, gentle)
3
mild(adjective, calm, close, quiet, simple)
3
prudent(adjective, good, quiet, appropriate)
3
self-controlled(adjective, calm, quiet, reasonable, gentle)
3
thick-skinned(adjective, calm, cool, indifferent)
3
unconcerned(adjective, calm, cool, cold, indifferent)
3
unmoved(adjective, calm, cool, indifferent)
3
unruffled(adjective, calm, cool, sensible, indifferent)
2
canny(adjective, hesitant, cautious, suspicious)
2
careful(adjective, calm, soft, reasonable, gentle)
2
checked(verb, reasonable, still, definite)
2
circumspect(adjective, reasonable, sensible, modest)
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APASmart Define. (2016). reserved thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/reserved/thesaurus/synonyms
ChicagoSmart Define. 2016. "reserved thesaurus" https://smartdefine.org/reserved/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, reserved thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/reserved/thesaurus/synonyms>.
MLASmart Define. "reserved thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/reserved/thesaurus/synonyms>