36 entries under careless topic. ×

21
inane(adjective, dull, simple, silly)
17
dull(adjective, quiet, flat, foolish)
16
silly(adjective, informal, indifferent, foolish)
15
mindless(adjective, silly, stupid, thoughtless)
12
foolish(adjective, indifferent, silly, stupid)
11
empty-headed(adjective, indifferent, stupid, full)
10
stupid(adjective, dull, simple, slow)
9
thoughtless(adjective, indifferent, stupid, blank)
8
unthinking(adjective, indifferent, stupid, blank)
5
senseless(adjective, simple, silly, foolish)
4
unreasonable(adjective, stupid, thoughtless, absurd)
4
unreasoning(adjective, stupid, empty, unthinking)
3
irrational(stupid, absurd, unthinking, obtuse)
2
confused(stupid, unthinking, obtuse, unperceptive)
2
doltish(adjective, simple, slow, foolish)
2
loony(adjective, stupid, unthinking, obtuse)
2
obtuse(adjective, simple, slow, foolish)
2
witless(adjective, dull, simple, slow)
1
absent-minded(stupid, unthinking, obtuse, unperceptive)
1
flighty(stupid, absurd, unthinking, obtuse)
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APASmart Define. (2015). vacuous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/vacuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "vacuous thesaurus" https://smartdefine.org/vacuous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, vacuous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/vacuous/thesaurus/synonyms>.
MLASmart Define. "vacuous thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/vacuous/thesaurus/synonyms>