- Definitions|2
- Thesaurus|2k
- Abbreviations|0
| blithering(adjective, foolish) | |
| blockhead | |
| bone-headed(adjective, foolish) | |
| bonehead | |
| buffoonish | |
| changeful(adjective, careless, silly, unsteady, inconstant) | |
| chuckle-headed(adjective, foolish) | |
| chuckleheaded | |
| cockamamy(silly, foolish, thoughtless, unwise, unintelligent) | |
| crass | |
| cuckoo | |
| decapitated | |
| ditzy(adjective, careless, silly, unsteady, inconstant) | |
| dopy | |
| dorky | |
| doting | |
| dozy | |
| dull-witted | |
| erratic(adjective, careless, silly, unsteady, inconstant) | |
| fantastic(weak, simple, silly, foolish, thoughtless) |
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| APA | Smart Define. (2016). brainless thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/brainless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "brainless thesaurus" https://smartdefine.org/brainless/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, brainless thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/brainless/thesaurus/synonyms>. |
| MLA | Smart Define. "brainless thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/brainless/thesaurus/synonyms> |