68 entries under stupid topic. ×

34
thoughtless(adjective, sharp, rough, rude, careless)
22
careless(adjective, sharp, rough, indifferent, silly)
21
mindless(adjective, dull, simple, wrong, slow)
12
inadvertent(adjective, careless, indifferent, foolish)
11
foolish(adjective, dull, simple, wrong, slight)
11
unreflective(adjective, careless, casual, inattention)
10
irrational(adjective, careless, foolish, unreasonable)
10
senseless(adjective, dull, simple, wrong, slow)
8
brainless(adjective, dull, silly, foolish)
8
ill-considered(adjective, careless, foolish, thoughtless)
8
unreasonable(adjective, careless, foolish, thoughtless)
7
injudicious(adjective, wrong, sharp, rough, careless)
7
regardless(adjective, careless, indifferent, foolish)
7
vacuous(adjective, careless, indifferent, blank)
6
empty-headed(adjective, slight, careless, indifferent, foolish)
6
ill-advised(adjective, dull, careless, foolish)
6
inane(adjective, dull, slight, careless, indifferent)
6
moronic(adjective, dull, simple, slow, silly)
6
remiss(adjective, careless, indifferent, foolish)
6
silly(adjective, wrong, slight, careless, foolish)
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APASmart Define. (2015). unthinking thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unthinking/thesaurus/synonyms
ChicagoSmart Define. 2015. "unthinking thesaurus" https://smartdefine.org/unthinking/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unthinking thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unthinking/thesaurus/synonyms>.
MLASmart Define. "unthinking thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/unthinking/thesaurus/synonyms>