79 entries under adjective topic. ×

5
idiotic
5
loggerheaded
5
mindless
5
moronic(slow, stupid)
5
simple
5
thick-skulled
4
insensitive(slow, stupid)
4
witless
4
wooden-headed
3
addle-pated
3
dimwitted(slang, ability, stupid)
3
empty-headed
3
gormless
3
heavy
3
hebetudinous
3
imbecilic
3
unintelligent
2
asinine
2
feather-brained
2
feeble-minded
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APASmart Define. (2015). thickheaded thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/thickheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "thickheaded thesaurus" https://smartdefine.org/thickheaded/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, thickheaded thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thickheaded/thesaurus/synonyms>.
MLASmart Define. "thickheaded thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/thickheaded/thesaurus/synonyms>