50 entries under simple topic. ×

4
numskull(noun, fool, innocent, jerk)
3
dimwit(noun, fool, innocent, jerk)
3
lamebrain(noun, fool, silly, innocent)
3
oaf(noun, fool, innocent, jerk)
3
turkey(noun, fool, silly, innocent)
3
twit(noun, fool, innocent, jerk)
2
buffoon(noun, fool, innocent, jerk)
2
dumb ox(noun, expression, fool, silly)
2
fathead(noun, fool, silly, innocent)
2
goose(noun, fool, silly, innocent)
2
mooncalf(noun, prompt, fool, silly)
2
softhead(noun, prompt, fool, silly)
2
tomfool(noun, prompt, fool, silly)
2
twerp(noun, fool, silly, innocent)
1
boob(fool, innocent, jerk, clown)
1
bore(fool, innocent, jerk, clown)
1
clown(fool, innocent, jerk, ass)
1
cretin(fool, innocent, jerk, clown)
1
easy mark(expression, fool, innocent, jerk)
1
fair game(expression, fool, innocent, jerk)
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APASmart Define. (2015). birdbrain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/birdbrain/thesaurus/synonyms
ChicagoSmart Define. 2015. "birdbrain thesaurus" https://smartdefine.org/birdbrain/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, birdbrain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/birdbrain/thesaurus/synonyms>.
MLASmart Define. "birdbrain thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/birdbrain/thesaurus/synonyms>