71 entries under obtuse topic. ×

2
daffy(adjective, simple, slow, stupid, boring)
2
dim-witted(adjective, simple, slow, stupid, boring)
2
doltish(adjective, simple, slow, careless, foolish)
2
half-baked(adjective, simple, slow, stupid, boring)
2
ignorant(adjective, simple, slow, foolish, stupid)
2
loony(adjective, careless, stupid, unthinking)
2
moronic(adjective, dull, simple, slow, stupid)
2
slow(adjective, dull, quiet, simple, flat)
2
thick(adjective, simple, slow, stupid, sluggish)
2
witless(adjective, dull, simple, slow, careless)
1
absent-minded(careless, stupid, unthinking, unperceptive)
1
flighty(careless, stupid, absurd, unthinking)
1
ill-considered(careless, stupid, unthinking, unperceptive)
1
imbecilic(adjective, simple, slow, silly, stupid)
1
imprudent(careless, stupid, absurd, unthinking)
1
insensate(adjective, dull, simple, slow, stupid)
1
puerile(careless, silly, stupid, absurd, unthinking)
1
simple-minded(adjective, simple, slow, stupid, boring)
1
sluggish(adjective, dull, quiet, simple, flat)
1
stolid(adjective, dull, quiet, simple, flat)
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APASmart Define. (2015). vacuous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/vacuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "vacuous thesaurus" https://smartdefine.org/vacuous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, vacuous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/vacuous/thesaurus/synonyms>.
MLASmart Define. "vacuous thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/vacuous/thesaurus/synonyms>