56 entries under simple topic. ×

6
moronic(adjective, dull, slow, silly)
6
pointless(adjective, dull, flat, slow)
5
brainless(adjective, dull, slow, silly)
5
daft(adjective, slow, foolish, stupid)
4
blockheaded(adjective, dull, ability, slow)
4
dimwitted(adjective, dull, slang, ability)
4
empty-headed(adjective, careless, stupid, unthinking)
4
oafish(adjective, dull, slow, stupid)
4
unresponsive(adjective, dull, hard, indifferent)
3
feeble-minded(adjective, slow, stupid, sluggish)
3
idiotic(adjective, dull, silly, foolish)
3
indiscreet(adjective, dull, slow, foolish)
3
insensate(noun, adjective, dull, hard)
3
senseless(adjective, dull, careless, silly)
3
simple-minded(adjective, slow, silly, stupid)
2
besotted(adjective, dull, slow, stupid)
2
half-witted(adjective, dull, slow, silly)
2
imbecile(adjective, dull, silly, foolish)
2
inane(adjective, dull, slow, careless)
2
scatterbrained(adjective, slow, stupid, sluggish)
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APASmart Define. (2015). obtuse thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/obtuse/thesaurus/synonyms
ChicagoSmart Define. 2015. "obtuse thesaurus" https://smartdefine.org/obtuse/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, obtuse thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/obtuse/thesaurus/synonyms>.
MLASmart Define. "obtuse thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/obtuse/thesaurus/synonyms>