| crackers(adjective, crazy, sick, sane) | |
| dotty(adjective, crazy, sick, insane, irrational) | |
| of unsound mind(expression, adjective, idiom, insane, sane) | |
| buggy(adjective, slang, sane, dotty) | |
| not all there(expression, adjective, idiom, crazy, sick) | |
| disordered(adjective, crazy, insane, irrational, sane) | |
| eccentric(adjective, crazy, mad, dotty) | |
| stark raving mad(expression, adjective, idiom, crazy, sick) | |
| crazy as a loon(expression, adjective, idiom, crazy, sick) | |
| nutty as a fruitcake(expression, adjective, idiom, crazy, sick) |
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| APA | Smart Define. (2015). loco thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/loco/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loco thesaurus" https://smartdefine.org/loco/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, loco thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/loco/thesaurus/synonyms>. |
| MLA | Smart Define. "loco thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/loco/thesaurus/synonyms> |