192 entries under sober topic. ×
| solid(adjective, good, great, pleasant, reasonable) | |
| blank(verb, adjective, detached, unfeeling) | |
| deadpan(adjective, calm, dull, flat, detached) | |
| demure(adjective, calm, quiet, gentle) | |
| impartial(adjective, calm, sound, reasonable, sensible) | |
| laid back(expression, adjective, feature, state, calm) | |
| prim(adjective, quiet, gentle, thoughtful, aloof) | |
| realistic(adjective, calm, sound, reasonable, sensible) | |
| serious(adjective, calm, sensible, unusual, relaxed) | |
| solemn(adjective, calm, sensible, restrained, thoughtful) | |
| immovable(adjective, calm, firm, solid, steady) | |
| grave(adjective, calm, sensible, restrained, thoughtful) | |
| meticulous(adjective, severe, thoughtful, prudent) | |
| normal(adjective, sound, reasonable, sensible, informal) | |
| precise(adjective, severe, thoughtful, prudent) | |
| prudent(adjective, calm, sound, smooth, reasonable) | |
| thoughtful(adjective, good, understanding, kind, sound) | |
| tolerant(adjective, feature, state, calm, sound) | |
| toneless(adjective, temper, cold, negative, detached) | |
| alert(adjective, pleasant, deliberate, familiar, thoughtful) |
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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> |