- Definitions|2
- Thesaurus|3.2k
- Abbreviations|0
62 entries under idiom topic. ×
| of unsound mind(expression, adjective, characteristic, silly) | |
| non compos mentis(expression, adjective, law, mad) | |
| mentally ill(expression, adjective, mad, sane) | |
| not all there(expression, adjective, crazy, unstable) | |
| out to lunch(expression, adjective, silly, crazy) | |
| off one's rocker(adjective, foolish, ill, sane) | |
| round the bend(expression, silly, foolish, mad) | |
| not right(expression, crazy, insanity, cuckoo) | |
| out of one's mind(adjective, foolish, ill, irrational) | |
| around the bend(expression, adjective, wrong, wild) | |
| bats in the belfry(expression, silly, foolish, mad) | |
| bereft of reason(expression, insanity) | |
| beside oneself(expression, adjective, upset, violent) | |
| mad as a hatter(expression, adjective, silly, foolish) | |
| nutty as fruitcake(expression, silly, foolish, mad) | |
| out of it(expression, adjective) | |
| mad as a March hare(expression, silly, foolish, mad) | |
| at fever pitch | |
| bent out of shape(expression, violent, fierce, unreasonable) | |
| beyond all reason(expression, silly, foolish, fantastic) |
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| APA | Smart Define. (2015). insane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/insane/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "insane thesaurus" https://smartdefine.org/insane/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, insane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/insane/thesaurus/synonyms>. |
| MLA | Smart Define. "insane thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/insane/thesaurus/synonyms> |