- Definitions|1
- Thesaurus|278
- Abbreviations|0
| dunderpate | |
| easy mark(expression, simple, fool, innocent, jerk) | |
| fair game(expression, simple, fool, innocent, jerk) | |
| fat-head | |
| featherbrain | |
| geese(noun, prompt, jerk, child, clown) | |
| harebrain | |
| illiterate(simple, fool, innocent, jerk, clown) | |
| innocent(simple, fool, jerk, clown, ass) | |
| knuckle-head | |
| lightweight(simple, fool, innocent, jerk, clown) | |
| lunkhead | |
| mug(sucker, boob, chump) | |
| mutt | |
| natural | |
| newt | |
| sap(noun, simple, fool, innocent, jerk) | |
| schlemiel(simple, fool, innocent, jerk, clown) | |
| schmo(noun, simple, prompt, fool, silly) | |
| schmuck(noun, simple, prompt, fool, silly) |
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| APA | Smart Define. (2015). birdbrain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/birdbrain/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "birdbrain thesaurus" https://smartdefine.org/birdbrain/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, birdbrain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/birdbrain/thesaurus/synonyms>. |
| MLA | Smart Define. "birdbrain thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/birdbrain/thesaurus/synonyms> |