| not all there(expression, adjective, idiom, crazy, unstable) | |
| off one's rocker(expression, adjective, idiom, sane) | |
| psycho(silly, foolish, crazy, mad, insane) | |
| round the bend(expression, adjective, idiom, silly, foolish) | |
| soft(adjective, stupid) | |
| unsound(adjective, silly, foolish, stupid, crazy) | |
| bananas(adjective, slang, sane) | |
| brainsick(adjective, wrong, crazy, confused, insane) | |
| dumb(adjective, simple, slow, silly, foolish) | |
| flaky(adjective, informal, wild, silly, foolish) | |
| haywire | |
| imbecile(adjective, foolish, stupid, crazy, insane) | |
| kookie | |
| laughable | |
| lightweight | |
| maniacal(adjective, silly, foolish, stupid, crazy) | |
| out to lunch(expression, adjective, idiom, silly, mad) | |
| preposterous(adjective, weak, simple, wild, silly) | |
| around the bend(expression, adjective, idiom, wrong, confused) | |
| bughouse |
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| APA | Smart Define. (2015). daft thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/daft/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "daft thesaurus" https://smartdefine.org/daft/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, daft thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/daft/thesaurus/synonyms>. |
| MLA | Smart Define. "daft thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/daft/thesaurus/synonyms> |