13 entries under silly topic. ×

13
fatuous(adjective, stupid, impractical, unintelligent)
9
stupid(adjective, simple, slow, unintelligent)
5
dense(adjective, simple, stupid, unintelligent)
5
moronic(adjective, slow, stupid, impulsive)
4
foolish(impulsive, impractical, unintelligent, unaware)
4
witless(adjective, impulsive, impractical, unintelligent)
3
brainless(adjective, simple, slow, stupid)
3
idiotic(adjective, impulsive, impractical, unintelligent)
2
birdbrained(impulsive, impractical, unintelligent, unaware)
1
inane(impractical, unintelligent, unaware, half-baked)
0
absurd(impractical, unintelligent, unaware, half-baked)
0
ludicrous(impractical, unintelligent, unaware, half-baked)
0
puerile(impractical, unintelligent, unaware, half-baked)
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APASmart Define. (2015). boneheaded thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/boneheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "boneheaded thesaurus" https://smartdefine.org/boneheaded/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, boneheaded thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/boneheaded/thesaurus/synonyms>.
MLASmart Define. "boneheaded thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/boneheaded/thesaurus/synonyms>