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