9
philosophical(adjective, calm, casual, unruffled, nonchalant)
9
quell(verb, stop, calm, order, dull)
9
reasonable(adjective, calm, good, quiet, sound)
9
refreshing(adjective, feature, characteristic, pleasant, gentle)
9
rigid(adjective, severe, cold, detached, unfriendly)
9
sassy(adjective, mad, bold, naughty, impudent)
9
stern(adjective, person, severe, unwarmhearted)
9
super(adjective, good, bad, great, tough)
9
tepid(adjective, calm, weak, smooth, pleasant)
9
tigerhearted(adjective, person, courage, without fear)
9
tough(adjective, calm, mean, bad, strong)
9
unaffected(adjective, calm, temper, informal, relaxed)
8
arctic(adjective, severe, keen, sharp, intense)
8
balance(noun, calm, feelings, grace, assurance)
8
blunt(verb, adjective, calm, dull, check)
8
chilling(adjective, cold, chill, chilly, frozen)
8
control(verb, hold, calm, order, quiet)
8
coolheaded(adjective, calm, sound, reasonable, sensible)
8
cooling(adjective, feature, characteristic, trait)
8
cruel(adjective, person, mean, hard, unpleasant)
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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>