295 entries under adjective topic. ×

9
thick-witted(dull, ability, stupid)
8
cloddish
8
dopey(dull, slang, ability, slow)
8
ignorant(dull, simple, slow, silly)
8
witless(dull, simple, slow, careless)
7
boneheaded(simple, slow, stupid)
7
bovine(dull, careless, heavy, foolish)
7
foolish(dull, simple, careless, silly)
7
imperceptive(hard, obscure, difficult, slow)
7
lumpish(dull, heavy, stupid, vulgar)
7
sluggish(dull, simple, slow, stupid)
6
asinine(silly, foolish, stupid, vulgar)
6
backward(dull, simple, slow, silly)
6
crass(hard, indifferent, coarse, vulgar)
6
fatuous
6
heavy(dull, stupid, impassive, unresponsive)
6
imbecilic(dull, simple, slow, silly)
6
impassive(dull, hard, slow, stupid)
6
insensible(hard, innocent, unfeeling, unsympathetic)
6
moronic(dull, simple, slow, silly)
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APASmart Define. (2015). obtuse thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/obtuse/thesaurus/synonyms
ChicagoSmart Define. 2015. "obtuse thesaurus" https://smartdefine.org/obtuse/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, obtuse thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/obtuse/thesaurus/synonyms>.
MLASmart Define. "obtuse thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/obtuse/thesaurus/synonyms>