10
soothe(verb, calm, order, dull, quiet)
10
staid(adjective, calm, set, firm, sensible)
10
together(adjective, calm, good, sound, reasonable)
10
uncordial(adjective, person, unwarmhearted)
10
unsociable(adjective, person, cold, indifferent, restrained)
10
untroubled(adjective, feature, state, calm, quiet)
10
valiant(adjective, person, strong, tough, bold)
9
antagonistic(adjective, person, cold, sensitive, shy)
9
appease(verb, calm, control, order, dull)
9
dampen(verb, stop, action, dull, quiet)
9
ease(noun, verb, calm, order, dull)
9
equanimity(noun, calm, temper, feelings, restraint)
9
even(adjective, calm, quiet, soft, reasonable)
9
good(adjective, kind, great, pleasant, reasonable)
9
hardhearted(adjective, person, unfeeling, insensitive, insensible)
9
laid-back(adjective, feature, state, calm, quiet)
9
lull(verb, calm, order, quiet, settle)
9
manly(adjective, person, courage, without fear)
9
neutral(adjective, calm, quiet, reasonable, sensible)
9
pacific(adjective, calm, quiet, weak, smooth)
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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>