| uncreative(adjective, characteristic, stupidity, foolishness) | |
| unimaginative(adjective, characteristic, stupidity, foolishness) | |
| unintellectual(adjective, mind, behavior, idiotism) | |
| uninventive(adjective, characteristic, stupidity, foolishness) | |
| unreasoning(adjective, mind, foolishness, disability) | |
| unresourceful(adjective, characteristic, stupidity, foolishness) | |
| unsmart(adjective, mind, behavior, idiotism) | |
| untaught(adjective, mind, behavior, idiotism) | |
| vacuous(adjective, mind, behavior, idiotism) | |
| wacky(adjective, mind, behavior, idiotism) | |
| weak-minded(adjective, mind, behavior, idiotism) | |
| whacky(adjective, mind, behavior, idiotism) | |
| worn(adjective, characteristic, stupidity, foolishness) | |
| zany(adjective, mind, behavior, idiotism) | |
| gentle |
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| APA | Smart Define. (2016). intelligent thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/intelligent/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "intelligent thesaurus" https://smartdefine.org/intelligent/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, intelligent thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/intelligent/thesaurus/antonyms>. |
| MLA | Smart Define. "intelligent thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/intelligent/thesaurus/antonyms> |