68 entries under stupid topic. ×

5
moronic(adjective, silly, foolish)
5
senseless(careless, silly, foolish, trivial)
5
unthinking(adjective, slight, careless, indifferent, silly)
4
doltish(adjective, simple, careless, silly, foolish)
4
dull(adjective, careless, unthinking, obtuse)
4
imbecilic(adjective, silly, foolish)
4
obtuse(adjective, simple, careless, unthinking)
3
daft(silly, foolish)
3
dense(adjective, simple, silly, foolish)
3
irrational(careless, vague, absurd, unthinking)
3
pointless(silly, foolish, trivial, absurd)
3
slow(adjective, silly, foolish)
3
unreasonable(adjective, careless, thoughtless, absurd)
2
confused(careless, unthinking, obtuse, unperceptive)
2
half-witted(simple, silly, foolish)
2
loony(careless, unthinking, obtuse, unperceptive)
2
thick-headed(silly, foolish)
2
unreasoning(careless, unthinking, obtuse, unperceptive)
1
absent-minded(adjective, careless, vague, unthinking)
1
bovine(adjective, careless, unthinking, obtuse)
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APASmart Define. (2015). empty-headed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/empty-headed/thesaurus/synonyms
ChicagoSmart Define. 2015. "empty-headed thesaurus" https://smartdefine.org/empty-headed/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, empty-headed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/empty-headed/thesaurus/synonyms>.
MLASmart Define. "empty-headed thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/empty-headed/thesaurus/synonyms>