8 entries under simple topic. ×

11
blockheaded(adjective, slow, stupid, impulsive)
11
thickheaded(adjective, slow, stupid)
9
stupid(adjective, slow, silly, unintelligent)
7
doltish(adjective, slow, stupid)
7
obtuse(adjective, slow, stupid)
5
dense(adjective, silly, stupid, unintelligent)
5
dumb(adjective, slow, stupid, impulsive)
3
brainless(adjective, slow, silly, stupid)
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APASmart Define. (2015). boneheaded thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/boneheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "boneheaded thesaurus" https://smartdefine.org/boneheaded/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, boneheaded thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/boneheaded/thesaurus/synonyms>.
MLASmart Define. "boneheaded thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/boneheaded/thesaurus/synonyms>