192 entries under sober topic. ×

1
cold-fish(adjective, calm, detached, unfeeling)
1
compos mentis(expression, adjective, sensible, rational, stable)
1
concerned(adjective, understanding, kind, deliberate, sympathetic)
1
consequent(adjective, good, sound, reasonable, sensible)
1
conservative(adjective, calm, quiet, soft, reasonable)
1
consistent(adjective, sound, friendly, sensible, agreeable)
1
conversant(adjective, reasonable, informal, significant, familiar)
1
cool cat(expression, adjective, calm, detached, blank)
1
credible(adjective, sound, sensible, rational, intelligent)
1
discerning(adjective, sound, smooth, reasonable, sharp)
1
discriminating(adjective, sound, smooth, reasonable, excellent)
1
far-sighted(calm, sound, smooth, reasonable, smart)
1
fastidious(thoughtful, cautious, prudent, wary)
1
heedful(adjective, deliberate, alert, familiar, thoughtful)
1
iceberg(adjective, calm, detached, unfeeling)
1
in cold blood(expression, adjective, idiom, detached, blank)
1
in right mind(expression, adjective, idiom, reasonable, sensible)
1
informed(adjective, reasonable, alert, familiar, rational)
1
judicial(adjective, calm, detached, unfeeling)
1
just(adjective, calm, good, sensible, detached)
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APASmart Define. (2016). cool thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/cool/thesaurus/synonyms
ChicagoSmart Define. 2016. "cool thesaurus" https://smartdefine.org/cool/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, cool thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/cool/thesaurus/synonyms>.
MLASmart Define. "cool thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/cool/thesaurus/synonyms>