142 entries under insane topic. ×
| flipped(adjective, characteristic, wild, enthusiastic, strange) | |
| illogical(adjective, wrong, silly, foolish, stupid) | |
| rash(adjective, silly, foolish, stupid, mad) | |
| unreasonable(adjective, weak, simple, wrong, offensive) | |
| crack-brained | |
| imbecile(adjective, foolish) | |
| off-the-wall(adjective, mad, odd) | |
| out to lunch(expression, adjective, idiom, wild, strange) | |
| unsound(adjective, wrong, silly, foolish, stupid) | |
| buggy(adjective, slang, silly, foolish, mad) | |
| twisted(adjective, mad, odd) | |
| disordered(adjective, wrong, wild, hot, confused) | |
| fantastical(adjective, marvelous, mad, odd) | |
| impractical(adjective, wrong, slow, wild, silly) | |
| blithering(adjective, foolish) | |
| feverish(adjective, hot, agitated, overexcited) | |
| implausible(adjective, strange, absurd, excessive) | |
| schizoid(adjective, strange, mad, absurd) | |
| unsettled(adjective, silly, foolish, stupid, hot) | |
| unstable(adjective, wrong, careless, foolish, stupid) |
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| APA | Smart Define. (2016). crazy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/crazy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "crazy thesaurus" https://smartdefine.org/crazy/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, crazy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/crazy/thesaurus/synonyms>. |
| MLA | Smart Define. "crazy thesaurus" 3 April 2016. Web. 25 September 2026. <https://smartdefine.org/crazy/thesaurus/synonyms> |