- Definitions|1
- Thesaurus|2.6k
- Abbreviations|0
| for the birds(expression, idiom, extraordinary, amazing, dubious) | |
| forward | |
| freakish | |
| frenzied(careless, thoughtless, impulsive, reckless, hasty) | |
| fribble | |
| full of holes(expression, idiom, extraordinary, amazing, dubious) | |
| furious(careless, thoughtless, impulsive, reckless, hasty) | |
| giddy-brained | |
| giddy-headed | |
| giddy-pated | |
| giddy-witted | |
| harebrain | |
| hasty(careless, wild, thoughtless, impulsive, reckless) | |
| headstrong(adjective, careless, bold, thoughtless, impulsive) | |
| hoity-toity | |
| hotheaded(careless, wild, silly, crazy, thoughtless) | |
| humorsome | |
| ignorant(stupid, impulsive, absurd, impractical, half-baked) | |
| ill-advised(weak, simple, careless, wild, foolish) | |
| ill-conceived(silly, foolish, fantastic, impulsive, unwise) |
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| APA | Smart Define. (2015). harebrained thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, harebrained thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>. |
| MLA | Smart Define. "harebrained thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms> |