90 entries under dull topic. ×

2
supine(adjective, heavy, stupid, impassive)
2
thick-headed(unintelligent, witless)
1
drowsy
1
gullible(adjective, simple, slow, silly)
1
half-baked(adjective, simple, slow, foolish)
1
ill-advised(careless, stupid, unthinking, unintelligent)
1
naive(adjective, simple, foolish, innocent)
1
numskulled(adjective, simple, slow, stupid)
1
ponderous
1
puerile(careless, stupid, unthinking, unintelligent)
1
rash(adjective, simple, slow, careless)
1
simpleminded(simple, stupid, unintelligent, witless)
1
slow on uptake(expression, adjective, idiom, slow)
1
soporific
1
trivial(adjective, simple, slow, foolish)
1
unthinking(adjective, simple, slow, careless)
0
dazed(unintelligent, witless)
0
deficient(unintelligent, witless)
0
dummy(unintelligent, witless)
0
fatheaded(slow, stupid)
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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>