173 entries under foolish topic. ×
| fruity(adjective, slang, silly, insane) | |
| harebrained(adjective, weak, simple, knowledge, ability) | |
| imbecilic(adjective, weak, simple, knowledge, ability) | |
| potty(adjective, wild, silly, stupid) | |
| sappy(adjective, knowledge, slang, ability) | |
| stupid(adjective, weak, simple, wrong, careless) | |
| witless(adjective, crazy, mad, odd) | |
| zany(adjective, weak, simple, knowledge, ability) | |
| bedlamite(noun, adjective, person, keen, warm) | |
| dumb(adjective, impractical, unintelligent, half-baked) | |
| irrational(adjective, weak, simple, careless, wild) | |
| non compos mentis(noun, expression, adjective, idiom, law) | |
| tomfool(adjective, knowledge, ability) | |
| unhinged(adjective, silly, stupid, unwise) | |
| cockeyed(adjective, knowledge, ability, informal, silly) | |
| eccentric(noun, adjective, wild, strange, silly) | |
| inane(adjective, stupid, fantastic, senseless) | |
| ludicrous(adjective, light, stupid, crazy) | |
| round the bend(expression, adjective, idiom, silly) | |
| wild(adjective, wrong, strange, silly) |
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| APA | Smart Define. (2015). loony thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/loony/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, loony thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>. |
| MLA | Smart Define. "loony thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms> |