- Definitions|2
- Thesaurus|3.2k
- Abbreviations|0
| queer(adjective, crazy, cuckoo) | |
| round the bend(expression, idiom, silly, foolish, mad) | |
| scatterbrained | |
| schizoid | |
| sick(adjective, crazy, mad, ill, unhealthy) | |
| tomfool(adjective, knowledge, ability, foolish) | |
| unstable(false, foolish, mad, unreasonable, ill) | |
| unthinking(adjective, foolish, unreasonable, illogical) | |
| violent(adjective, wild, mad, vicious, fierce) | |
| reckless(adjective, silly, thoughtless, unwise) | |
| abnormal(adjective, fanatical, preoccupied, infatuated, neurotic) | |
| bats | |
| bughouse | |
| disconnected(adjective, foolish, unreasonable, chaotic, illogical) | |
| dull(foolish, crazy) | |
| fantastic(adjective, weak, simple, strange, silly) | |
| feverish | |
| flaky(adjective, simple, silly, foolish, crazy) | |
| hare-brained(adjective, silly, foolish, crazy, zany) | |
| imbecile(foolish, crazy) |
For more, visit
Insane on
Power Thesaurus
| APA | Smart Define. (2015). insane thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/insane/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, insane thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>. |
| MLA | Smart Define. "insane thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms> |