180 entries under reasonable topic. ×

3
pleasant(adjective, calm, weak, kind, great)
3
pleasing(adjective, calm, quiet, kind, great)
3
prudent(adjective, calm, sound, smooth)
3
tame(verb, adjective, calm, control, quiet)
3
thoughtful(adjective, good, understanding, kind, sound)
3
tolerant(adjective, feature, state, calm, sound)
2
abstinent(adjective, calm, soft, moderate)
2
agreeable(adjective, calm, quiet, kind, pleasant)
2
all there(expression, adjective, calm, good, sound)
2
attentive(adjective, understanding, kind, friendly)
2
au courant(expression, alert, familiar, rational)
2
aware(adjective, sensible, informal, alert)
2
circumspect(adjective, understanding, kind, sound)
2
cognizant(adjective, alert, significant, familiar)
2
commonsensical(adjective, calm, good, sound)
2
conscious(adjective, sound, sensible, alert)
2
considerate(adjective, calm, quiet, understanding, kind)
2
cool as cucumber(expression, adjective, idiom, calm, quiet)
2
down-to-earth(adjective, calm, sound, sensible)
2
fair(adjective, calm, good, pleasant)
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APASmart Define. (2016). cool thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/cool/thesaurus/synonyms
ChicagoSmart Define. 2016. "cool thesaurus" https://smartdefine.org/cool/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, cool thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/cool/thesaurus/synonyms>.
MLASmart Define. "cool thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/cool/thesaurus/synonyms>