25
moderate(verb, adjective, activity, stop, action)
25
detached(adjective, calm, quiet, mild, relaxed)
25
quiet(verb, adjective, feature, state, action)
25
peaceful(adjective, calm, state, quiet, smooth)
24
nonchalant(adjective, feature, state, calm, temper)
24
collected(adjective, calm, quiet, sound, reasonable)
24
icy(adjective, person, mean, hard, severe)
24
courageous(adjective, person, bold, courage, spirited)
23
distant(adjective, quiet, attitude, cold, indifferent)
23
audacious(adjective, person, mad, bold, courage)
23
uninterested(adjective, temper, relaxed, cold, indifferent)
22
impassive(adjective, calm, quiet, temper, relaxed)
22
placid(adjective, calm, quiet, weak, smooth)
22
standoffish(noun, adjective, person, attitude, cold)
21
lukewarm(adjective, characteristic, calm, mean, hard)
21
reserved(adjective, calm, reasonable, moderate, firm)
21
phlegmatic(adjective, calm, quiet, relaxed, indifferent)
20
sober(adjective, calm, good, dull, quiet)
20
unresponsive(adjective, calm, dull, mean, hard)
20
unexcited(adjective, characteristic, calm, quiet, easy)
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APASmart Define. (2016). cool thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/cool/thesaurus/synonyms
ChicagoSmart Define. 2016. "cool thesaurus" https://smartdefine.org/cool/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, cool thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/cool/thesaurus/synonyms>.
MLASmart Define. "cool thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/cool/thesaurus/synonyms>