- Definitions|2
- Thesaurus|2.6k
- Abbreviations|0
| bats in the belfry(expression, idiom, silly, foolish, mad) | |
| berserk(adjective, silly, foolish, crazy, mad) | |
| bizarre(adjective, wrong, wild, silly, foolish) | |
| booby(noun, bird) | |
| carol | |
| cat | |
| chirr | |
| dingbat(noun, slang, wise) | |
| dumb | |
| erratic(silly, foolish, mad, insane, unwise) | |
| flake(noun, slang, mad, sick, mad person) | |
| flipped(silly, foolish, mad, insane, unwise) | |
| flipped out(expression, silly, foolish, crazy, mad) | |
| freaked out(expression, silly, foolish, mad, insane) | |
| frenzied(adjective, wrong, silly, foolish, stupid) | |
| hare-brained(zany, comical, schtick) | |
| imbecile | |
| imbecilic | |
| irresponsible(adjective, wrong, wild, silly, foolish) | |
| luny(noun, adjective, slang, sick, mad person) |
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| APA | Smart Define. (2016). cuckoo thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/cuckoo/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "cuckoo thesaurus" https://smartdefine.org/cuckoo/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, cuckoo thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/cuckoo/thesaurus/synonyms>. |
| MLA | Smart Define. "cuckoo thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/cuckoo/thesaurus/synonyms> |