45 entries under slang topic. ×
| nuts(adjective, silly, foolish, crazy) | |
| loony(noun, adjective, informal, foolish) | |
| psycho(noun, adjective, silly, mad) | |
| cuckoo(noun, adjective, silly, mad) | |
| not all there(noun, expression, adjective, idiom) | |
| schizo(noun, adjective, silly, mad) | |
| screwball(noun, adjective, silly, mad) | |
| luny(noun, adjective, sick, mad person) | |
| basket case(noun, sick, mad person) | |
| coo-coo(noun, sick, mad person) | |
| crack-brain(noun, sick, mad person) | |
| crack-skull(noun, sick, mad person) | |
| flake(noun, sick, mad person) | |
| fruit-cake(noun, sick, mad person) | |
| goo-goo(noun, sick, mad person) | |
| goof(noun, sick, mad person) | |
| jerk(noun, sick, mad person) | |
| jerk-off(noun, sick, mad person) | |
| knee-jerk(noun, sick, mad person) | |
| kook(noun, sick, mad person) |
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| APA | Smart Define. (2015). mental thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mental/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "mental thesaurus" https://smartdefine.org/mental/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, mental thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mental/thesaurus/synonyms>. |
| MLA | Smart Define. "mental thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/mental/thesaurus/synonyms> |