- Definitions|1
- Thesaurus|1k
- Abbreviations|0
59 entries under adjective topic. ×
| silly(ability, foolish, absurd, giddy) | |
| dizzy(slang, ability, careless, silly) | |
| empty-headed(slight, ability, careless, silly) | |
| frivolous(slight, ability, careless, silly) | |
| giddy(simple, ability, careless, silly) | |
| goofy(frivolous, dizzy, frothy, flighty) | |
| airheaded | |
| harebrained(ability, careless, silly, foolish) | |
| light-headed(silly, faint) | |
| flighty(slight, ability, careless, silly) | |
| lightheaded | |
| brainless(simple, careless, foolish, stupid) | |
| gaga(ability, informal, careless, foolish) | |
| scatterbrained | |
| birdbrained(slang, ability) | |
| frothy(slight, ability, careless, trivial) | |
| shallow(ignorant, unintelligent) | |
| foolish | |
| light | |
| capricious(careless, unstable, unreliable, changeable) |
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| APA | Smart Define. (2015). featherbrained thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/featherbrained/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "featherbrained thesaurus" https://smartdefine.org/featherbrained/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, featherbrained thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/featherbrained/thesaurus/synonyms>. |
| MLA | Smart Define. "featherbrained thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/featherbrained/thesaurus/synonyms> |