| lamebrain | |
| loco | |
| ludicrous | |
| madcap(adjective, reasonable, crazy, impulsive) | |
| maniac | |
| manic-depressive | |
| maniclike | |
| meshuga | |
| mindless | |
| nonsensical | |
| obsessed | |
| of unsound mind(expression, idiom, calm, sound) | |
| possessed | |
| potty | |
| psychopathic | |
| psychopathologic | |
| psychopathological | |
| psychotic | |
| rabid(calm, indifferent) | |
| round the bend(expression, idiom, calm, sound) |
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| APA | Smart Define. (2015). sane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sane/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "sane thesaurus" https://smartdefine.org/sane/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, sane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sane/thesaurus/antonyms>. |
| MLA | Smart Define. "sane thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/sane/thesaurus/antonyms> |