- Definitions|2
- Thesaurus|2.6k
- Abbreviations|0
146 entries under adjective topic. ×
| non compos mentis(law, sane) | |
| not all there(noun, expression, idiom, slang) | |
| of unsound mind(expression, idiom, silly, mad) | |
| preposterous(silly, foolish, stupid, unwise) | |
| stupid(silly, foolish, unwise) | |
| bats | |
| bughouse | |
| eccentric(noun, silly, foolish, crazy) | |
| inane(silly, foolish, unwise) | |
| irrational(wrong, wild, silly, foolish) | |
| maniacal(silly, stupid, crazy, mad) | |
| nonsensical(silly, foolish, unwise) | |
| out to lunch(expression, idiom, silly, mad) | |
| psychotic(noun, silly, foolish, stupid) | |
| ridiculous(silly, foolish, stupid, unwise) | |
| unhinged(silly, foolish, stupid, crazy) | |
| absurd(silly, foolish, unwise) | |
| asinine | |
| brainsick(crazy, confused, insane, irrational) | |
| buggy(slang, sane) |
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| APA | Smart Define. (2016). cuckoo thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/cuckoo/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "cuckoo thesaurus" https://smartdefine.org/cuckoo/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, cuckoo thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/cuckoo/thesaurus/synonyms>. |
| MLA | Smart Define. "cuckoo thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/cuckoo/thesaurus/synonyms> |