- Definitions|2
- Thesaurus|2.3k
- Abbreviations|0
58 entries under thoughtful topic. ×
| abstruse(adjective, obscure, deep, precise) | |
| cerebral(rational, intelligent, serious, wise) | |
| insightful(sound, sharp, familiar, deep, intelligent) | |
| rational(adjective, intelligent, wise, moral) | |
| recondite(adjective, deep, knowledgeable, cultured) | |
| subtle(deep, reflective) | |
| esoteric(adjective, deep, knowledgeable, cultured) | |
| serious(deep, cultured, reflective) | |
| acroamatic(deep, reflective) | |
| assiduous(serious, reflective) | |
| attentive(serious, reflective) | |
| careful(sound, sharp, serious, wise) | |
| contemplative(sound, sharp, intelligent, serious) | |
| difficult(deep, reflective) | |
| diligent(serious, reflective) | |
| eager(serious, reflective) | |
| earnest(serious, reflective) | |
| grubbing(serious, reflective) | |
| hard-working(serious, reflective) | |
| heavy(deep, reflective) |
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| APA | Smart Define. (2015). learned thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/learned/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "learned thesaurus" https://smartdefine.org/learned/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, learned thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/learned/thesaurus/synonyms>. |
| MLA | Smart Define. "learned thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/learned/thesaurus/synonyms> |