70 entries under obtuse topic. ×

2
not bright(expression, adjective, simple, slow, stupid)
2
unmindful(adjective, careless, silly, foolish, innocent)
2
unperceptive(adjective, unobservant)
2
unreflective(careless, stupid, unthinking, unperceptive)
2
vacuous(adjective, dull, simple, slow, careless)
1
backward(adjective, simple, slow, silly, foolish)
1
bovine(adjective, careless, stupid, vulgar, thoughtless)
1
careless(adjective, silly, foolish, stupid, thoughtless)
1
gullible(adjective, dull, simple, slow, silly)
1
heedless(adjective, careless, silly, foolish, thoughtless)
1
inattentive(adjective, careless, silly, foolish, stupid)
1
lamebrained(careless, silly, stupid, unthinking, unintelligent)
1
naive(adjective, dull, simple, foolish, innocent)
1
neglectful(adjective, careless, silly, foolish, stupid)
1
negligent(adjective, careless, silly, foolish, thoughtless)
1
numskulled(adjective, simple, slow, stupid, boring)
1
sluggish(adjective, dull, simple, slow, stupid)
0
absent-minded(careless, stupid, unthinking, unperceptive)
0
inadvertent(careless, stupid, thoughtless, unthinking, inconsiderate)
0
incomprehensible(careless, stupid, unthinking, unperceptive)
11 years ago|20k views|share |citing 
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>