50 entries under adjective topic. ×
| stupid | |
| tardy | |
| unintelligent | |
| unwise | |
| vacant | |
| witless | |
| ridiculous | |
| senseless | |
| spurious | |
| strange |
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| APA | Smart Define. (2016). brain thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/brain/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "brain thesaurus" https://smartdefine.org/brain/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, brain thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/brain/thesaurus/antonyms>. |
| MLA | Smart Define. "brain thesaurus" 19 February 2016. Web. 25 September 2026. <https://smartdefine.org/brain/thesaurus/antonyms> |