90 entries under dull topic. ×

4
loutish
4
oafish(adjective, simple, slow, stupid)
4
unemotional(adjective, hard, unfeeling, unsympathetic)
4
unresponsive(adjective, hard, simple, indifferent)
4
weak-minded(adjective, slow, stupid)
3
idiotic(adjective, simple, silly, foolish)
3
inactive(adjective, heavy, stupid, impassive)
3
indiscreet(adjective, simple, slow, foolish)
3
insensate(noun, adjective, hard, simple)
3
senseless(adjective, simple, careless, silly)
3
stupefied(adjective, unintelligent, witless, insensibility)
3
torpid(adjective, hard, slow, stupid)
2
besotted(adjective, simple, slow, stupid)
2
half-witted(adjective, simple, slow, silly)
2
imbecile(adjective, simple, silly, foolish)
2
inane(adjective, simple, slow, careless)
2
indifferent(adjective, hard, unfeeling, unsympathetic)
2
nonsensical(unintelligent, witless)
2
phlegmatic(adjective, slow, stupid, impassive)
2
sleepy(adjective, insensibility)
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APASmart Define. (2015). obtuse thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/obtuse/thesaurus/synonyms
ChicagoSmart Define. 2015. "obtuse thesaurus" https://smartdefine.org/obtuse/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, obtuse thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/obtuse/thesaurus/synonyms>.
MLASmart Define. "obtuse thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/obtuse/thesaurus/synonyms>