- Definitions|2
- Thesaurus|2.5k
- Abbreviations|0
| half-assed | |
| idiotic(adjective, foolish, stupid) | |
| gullible(adjective, naive, discerning, trusting) | |
| ignorant(adjective, foolish, stupid) | |
| stupid(adjective, foolish) | |
| obtuse(adjective, foolish, stupid) | |
| silly | |
| dull | |
| unintelligent(adjective, foolish, stupid) | |
| fatuous | |
| thick(adjective, foolish, stupid) | |
| crazy | |
| jejune | |
| shallow(adjective, foolish, stupid) | |
| dopey | |
| imbecile(adjective, foolish, stupid) | |
| brainless | |
| slow | |
| birdbrained | |
| insane |
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| APA | Smart Define. (2016). astute thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/astute/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "astute thesaurus" https://smartdefine.org/astute/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, astute thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/astute/thesaurus/antonyms>. |
| MLA | Smart Define. "astute thesaurus" 22 March 2016. Web. 23 September 2026. <https://smartdefine.org/astute/thesaurus/antonyms> |