- Definitions|0
- Thesaurus|1.2k
- Abbreviations|0
26 entries under unintelligent topic. ×
| fatuous(adjective, silly, foolish, stupid, crazy) | |
| witless(adjective, silly, foolish, innocent, vague) | |
| half-baked(adjective, foolish, stupid, impulsive) | |
| airheaded(adjective, stupid, unstable, unreliable, changeable) | |
| boneheaded(silly, impulsive, impractical, unaware) | |
| brainless(silly, foolish, impulsive, impractical) | |
| dumb(foolish, stupid, crazy, insane) | |
| foolish(silly, stupid, crazy, insane) | |
| mindless(adjective, silly, foolish, innocent, dense) | |
| moronic(adjective, dull, simple, slow, silly) | |
| senseless(foolish, crazy, impulsive, insane) | |
| shallow(adjective, stupid, innocent, thick, unfamiliar) | |
| vacuous(adjective, empty) | |
| absurd(silly, foolish, impractical, unaware) | |
| asinine(silly, foolish, crazy, insane) | |
| crazy(foolish, impulsive, insane, impractical) | |
| inane(silly, foolish, stupid, crazy, insane) | |
| lamebrained(adjective, dull, simple, silly, stupid) | |
| ludicrous(silly, foolish, impractical, unaware) | |
| lunatic(silly, foolish, crazy, insane) |
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| APA | Smart Define. (2015). birdbrained thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/birdbrained/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "birdbrained thesaurus" https://smartdefine.org/birdbrained/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, birdbrained thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/birdbrained/thesaurus/synonyms>. |
| MLA | Smart Define. "birdbrained thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/birdbrained/thesaurus/synonyms> |