| doolally(adjective, slang, crazy, mad) | |
| fatuous(adjective, insane) | |
| fey | |
| idiotic(adjective, insane) | |
| mad as a hatter(adjective, idiom, crazy, sick, insane) | |
| manic | |
| mindless(mad, insane, psychiatric) | |
| nutty as a fruitcake(expression, adjective, idiom, crazy, sick) | |
| odd | |
| off-the-wall | |
| off one's chump | |
| out of one's mind(adjective, idiom, insane, sane) | |
| schizophrenic(adjective, insane) | |
| sick(crazy, crackers) | |
| sick in the head(expression, adjective, idiom, crazy, sick) | |
| silly | |
| abnormal | |
| alligatored | |
| anthrax | |
| baked(crazy, mad, insane, irrational, distracted) |
For more, visit
Loco on
Power Thesaurus
| APA | Smart Define. (2015). loco thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/loco/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "loco thesaurus" https://smartdefine.org/loco/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, loco thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/loco/thesaurus/synonyms>. |
| MLA | Smart Define. "loco thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/loco/thesaurus/synonyms> |