70 entries under obtuse topic. ×

6
half-baked(adjective, dull, weak, simple, slow)
6
half-witted(adjective, dull, weak, simple, slow)
6
unthinking(adjective, dull, simple, slow, careless)
5
doltish(adjective, dull, weak, simple, slow)
5
scatterbrained(adjective, simple, slow, foolish, stupid)
5
unreasoning(careless, stupid, thoughtless, unthinking, inconsiderate)
4
dense(adjective, dull, simple, slow, silly)
4
dim-witted(adjective, simple, slow, foolish, stupid)
4
flighty(careless, stupid, unthinking, unperceptive)
4
rash(adjective, dull, careless, silly, foolish)
4
undiscerning(adjective, careless, stupid, unthinking)
4
unintellectual(adjective, simple, slow, stupid, boring)
3
addled(adjective, simple, slow, stupid, boring)
3
shallow(adjective, simple, slow, silly, stupid)
3
simple-minded(adjective, simple, slow, silly, foolish)
3
slow(adjective, dull, simple, silly, foolish)
3
stolid(adjective, dull, simple, slow, foolish)
2
besotted(adjective, simple, slow, stupid, boring)
2
confused(careless, stupid, unthinking, unperceptive)
2
inept(careless, foolish, stupid, rash, risky)
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APASmart Define. (2015). witless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/witless/thesaurus/synonyms
ChicagoSmart Define. 2015. "witless thesaurus" https://smartdefine.org/witless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, witless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/witless/thesaurus/synonyms>.
MLASmart Define. "witless thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/witless/thesaurus/synonyms>