89 entries under thoughtful topic. ×
| phrenic(heavy, intelligent, knowledgeable, intellectual) | |
| quiet(adjective, calm, reasonable, sensible, dark) | |
| scholarly(adjective, smart, bright, sensible, intelligent) | |
| solemn(adjective, calm, quiet, reasonable, sensible) | |
| sophisticated(adjective, sensible, intelligent, wise) | |
| staid(adjective, calm, quiet, reasonable, sensible) | |
| abnegating(adjective, calm, quiet, reasonable, sensible) | |
| absorbed(adjective, reasonable, keen, deep, intelligent) | |
| attentive(reasonable, sober, realistic, perceptive) | |
| calculating(adjective, reasonable, keen, smart, bright) | |
| cold(adjective, calm, sensible, dark, restrained) | |
| constrained(adjective, calm, quiet, reasonable, sensible) | |
| deliberative(adjective, reasonable, keen, deep, intelligent) | |
| drab(adjective, calm, quiet, reasonable, sensible) | |
| engrossed(adjective, reasonable, keen, deep, intelligent) | |
| eschewing(adjective, calm, quiet, reasonable, sensible) | |
| forgoing(adjective, calm, quiet, reasonable, sensible) | |
| grave(adjective, calm, quiet, reasonable, keen) | |
| inhibited(adjective, calm, sensible, dark, restrained) | |
| intellective(intelligent, knowledgeable, intellectual, mental) |
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| APA | Smart Define. (2016). rational thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rational/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "rational thesaurus" https://smartdefine.org/rational/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, rational thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rational/thesaurus/synonyms>. |
| MLA | Smart Define. "rational thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/rational/thesaurus/synonyms> |