- Definitions|2
- Thesaurus|2.6k
- Abbreviations|0
93 entries under foolish topic. ×
| senseless(adjective, silly, stupid, unwise) | |
| cockeyed(adjective, silly, unwise) | |
| delirious(adjective, silly, crazy, mad) | |
| flaky(adjective, silly, crazy, mad) | |
| half-baked(silly, unwise) | |
| unreasonable(adjective, silly, stupid) | |
| unwise(adjective, silly) | |
| bats in the belfry(expression, idiom, silly, mad) | |
| berserk(adjective, silly, crazy, mad) | |
| bizarre(adjective, wrong, wild, silly) | |
| erratic(silly, mad, insane, unwise) | |
| flipped(silly, mad, insane, unwise) | |
| flipped out(expression, silly, crazy, mad) | |
| freaked out(expression, silly, mad, insane) | |
| frenzied(adjective, wrong, silly, stupid) | |
| irresponsible(adjective, wrong, wild, silly) | |
| mad as a March hare(expression, idiom, silly, mad) | |
| mad as a hatter(expression, adjective, idiom, silly) | |
| mentally strange(expression, silly, mad, insane) | |
| nutty as fruitcake(expression, idiom, silly, mad) |
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| APA | Smart Define. (2016). cuckoo thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/cuckoo/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "cuckoo thesaurus" https://smartdefine.org/cuckoo/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, cuckoo thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/cuckoo/thesaurus/synonyms>. |
| MLA | Smart Define. "cuckoo thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/cuckoo/thesaurus/synonyms> |