- Definitions|1
- Thesaurus|764
- Abbreviations|0
| crazy(fanatic, loony, dingbat, ultraist) | |
| insane(eccentric, lunatic, crackpot) | |
| crackpot(noun, character, crazy, eccentric, lunatic) | |
| loco | |
| nutcase(noun, character, dissentient, misfit, lamebrain) | |
| nut(noun, crazy, eccentric, fanatic, lunatic) | |
| nutter | |
| psycho | |
| whacko | |
| loony | |
| lunatic | |
| maniac | |
| ding-a-ling(noun, character, fanatic, dissentient, crackpot) | |
| dingbat(noun, character, crazy, fanatic, loony) | |
| weirdo(noun, character, crazy, loony, dissentient) | |
| batty | |
| bonkers | |
| cuckoo | |
| kook(noun, person, crazy, eccentric, fanatic) | |
| loon(fanatic, dingbat, ultraist) |
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| APA | Smart Define. (2015). wacko thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/wacko/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "wacko thesaurus" https://smartdefine.org/wacko/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, wacko thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/wacko/thesaurus/synonyms>. |
| MLA | Smart Define. "wacko thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/wacko/thesaurus/synonyms> |