- Definitions|2
- Thesaurus|803
- Abbreviations|0
| impractical(adjective, wrong, wild, crazy, mad) | |
| irresponsible(adjective, wrong, wild, crazy, mad) | |
| kookie | |
| manic | |
| mental | |
| meshuga | |
| nauseated | |
| not right | |
| nutty as a fruitcake(expression, adjective, idiom, crazy, sick) | |
| off one's rocker(adjective, idiom, insane, sane) | |
| offhand(adjective, inattention) | |
| out of one's mind(adjective, idiom, insane, sane) | |
| pale | |
| possessed | |
| queasy | |
| queer | |
| reasonless | |
| screwball | |
| screwy(adjective, slang, sane) | |
| senseless |
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| APA | Smart Define. (2015). brainsick thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/brainsick/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "brainsick thesaurus" https://smartdefine.org/brainsick/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, brainsick thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/brainsick/thesaurus/synonyms>. |
| MLA | Smart Define. "brainsick thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/brainsick/thesaurus/synonyms> |