72 entries under sober topic. ×
| clear-cut(adjective, sound, sensible, rational, intelligent) | |
| cogitative(adjective, reasonable, keen, deep, rational) | |
| commonsensical(adjective, sound, sensible, rational, intelligent) | |
| consequent(adjective, sound, reasonable, sensible, rational) | |
| consistent(adjective, sound, sensible, rational, intelligent) | |
| contemplative(adjective, reasonable, keen, deep, rational) | |
| cool(adjective, sound, reasonable, sensible, rational) | |
| credible(adjective, sound, sensible, rational, intelligent) | |
| deliberative(adjective, reasonable, keen, deep, rational) | |
| discerning(adjective, sound, reasonable, keen, sensible) | |
| earnest(adjective, reasonable, keen, deep, rational) | |
| engrossed(adjective, reasonable, keen, deep, rational) | |
| farsighted(adjective, reasonable, keen, deep, rational) | |
| grave(adjective, reasonable, keen, deep, rational) | |
| intent(adjective, reasonable, keen, deep, rational) | |
| judicious(adjective, sound, reasonable, sensible, rational) | |
| justifiable(adjective, sound, sensible, rational, intelligent) | |
| keen(adjective, reasonable, deep, rational, thoughtful) | |
| levelheaded(adjective, sound, reasonable, sensible, rational) | |
| lost in thought(expression, adjective, idiom, reasonable) |
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| APA | Smart Define. (2015). cerebral thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/cerebral/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "cerebral thesaurus" https://smartdefine.org/cerebral/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, cerebral thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/cerebral/thesaurus/synonyms>. |
| MLA | Smart Define. "cerebral thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/cerebral/thesaurus/synonyms> |