- Definitions|1
- Thesaurus|2.6k
- Abbreviations|0
41 entries under fantastic topic. ×
| crazy(adjective, weak, simple, knowledge, ability) | |
| silly(adjective, weak, simple, knowledge, ability) | |
| insane(adjective, weak, simple, knowledge, ability) | |
| foolish(adjective, weak, simple, knowledge, ability) | |
| goofy(adjective, silly, foolish, unwise) | |
| absurd(adjective, weak, simple, knowledge, ability) | |
| loony(adjective, weak, simple, knowledge, ability) | |
| preposterous(adjective, weak, great, simple, knowledge) | |
| foolhardy(adjective, careless, foolish, thoughtless) | |
| balmy(adjective, knowledge, slang, ability, wild) | |
| idiotic(adjective, weak, simple, knowledge, ability) | |
| inane(adjective, careless, silly, foolish, stupid) | |
| wild(adjective, careless, foolish, thoughtless) | |
| cockeyed(adjective, knowledge, ability, informal, extraordinary) | |
| half-baked(adjective, weak, simple, foolish, stupid) | |
| ridiculous(adjective, weak, simple, wild, strange) | |
| fatuous(weak, simple, silly, foolish, stupid) | |
| imprudent(adjective, weak, simple, careless, wild) | |
| irresponsible(adjective, careless, wild, strange, excited) | |
| nonsensical(adjective, weak, simple, knowledge, ability) |
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| APA | Smart Define. (2015). harebrained thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, harebrained thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>. |
| MLA | Smart Define. "harebrained thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms> |