- Definitions|1
- Thesaurus|866
- Abbreviations|0
| crazy(adjective, mad, insane, irrational, mental) | |
| mad | |
| insane(adjective, crazy, mad, sick, irrational) | |
| psychotic(adjective, crazy, mad, insane, mental) | |
| unbalanced(adjective, crazy, mad, sick, insane) | |
| mental(adjective, crazy, mad, insane, irrational) | |
| demented(adjective, mad, insane, irrational, frenzied) | |
| deranged(adjective, insane, irrational, frenzied, distraught) | |
| batty | |
| bonkers | |
| daft | |
| nuts | |
| barmy | |
| loco | |
| loony | |
| lunatic | |
| unhinged | |
| crackers | |
| crazed(adjective, crazy, insane, irrational, overwrought) | |
| disturbed |
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| APA | Smart Define. (2016). certifiable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/certifiable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "certifiable thesaurus" https://smartdefine.org/certifiable/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, certifiable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/certifiable/thesaurus/synonyms>. |
| MLA | Smart Define. "certifiable thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/certifiable/thesaurus/synonyms> |