78 entries under foolish topic. ×
| insane(crazy, impractical, half-baked, doomed) | |
| mindless(adjective, dull, simple, slow, silly) | |
| batty(adjective, crazy, impulsive, insane) | |
| daffy(adjective, simple, slow, silly) | |
| feebleminded(adjective, stupid, unintelligent, mindless) | |
| ludicrous(adjective, dull, stupid, half-baked) | |
| ridiculous(adjective, impractical, unintelligent, half-baked) | |
| opaque(adjective, dull, silly, stupid) | |
| cretinous | |
| insensate(adjective, dull, simple, slow, informal) | |
| jackass(noun, adjective) | |
| scatterbrained(adjective, simple, slow, silly) | |
| crackpot(adjective, impractical, half-baked, doomed) | |
| bone-headed | |
| irresponsible(stupid, impractical, half-baked, doomed) | |
| lunatic(adjective, crazy, insane, unintelligent) | |
| nitwit(noun, adjective) | |
| simpleminded(adjective, dull, simple, silly) | |
| birdbrained(stupid, crazy, insane, unintelligent) | |
| blithering |
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| APA | Smart Define. (2016). dumb thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, dumb thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>. |
| MLA | Smart Define. "dumb thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms> |