- Definitions|2
- Thesaurus|2k
- Abbreviations|0
89 entries under rational topic. ×
| intelligent(adjective, smart, bright, sharp, informal) | |
| clever(adjective, cool, smooth, keen, sharp) | |
| smart(adjective, understanding, cool, smooth, keen) | |
| brilliant(adjective, cool, excellent, sharp, ability) | |
| bright(adjective, cool, sharp, smart, significant) | |
| intellectual(adjective, reasonable, ability, smart, bright) | |
| sharp(adjective, understanding, cool, smooth, keen) | |
| knowing(verb, adjective, understanding, smooth, knowledge) | |
| knowledgeable(adjective, understanding, cool, knowledge, keen) | |
| quick-witted(adjective, cool, keen, sharp, smart) | |
| astute(adjective, understanding, cool, smooth, keen) | |
| scholarly(adjective, knowledge, smart, bright, experience) | |
| wise(adjective, understanding, cool, smooth, reasonable) | |
| keen(adjective, understanding, smooth, reasonable, sharp) | |
| quick(adjective, understanding, cool, smooth, keen) | |
| apt(adjective, good, smooth, sharp, smart) | |
| cerebral(adjective, reasonable, intelligent, thoughtful) | |
| highbrow(adjective, smart, bright, intelligent) | |
| perceptive(adjective, understanding, cool, smooth, keen) | |
| thoughtful(adjective, reasonable, keen, heavy, deep) |
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| APA | Smart Define. (2016). brainy thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/brainy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "brainy thesaurus" https://smartdefine.org/brainy/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, brainy thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/brainy/thesaurus/synonyms>. |
| MLA | Smart Define. "brainy thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/brainy/thesaurus/synonyms> |