122 entries under foolish topic. ×

34
thoughtless(adjective, sharp, rough, rude, careless)
27
heedless(adjective, sharp, rude, careless, indifferent)
22
careless(adjective, sharp, rough, indifferent, silly)
21
mindless(adjective, dull, simple, wrong, slow)
19
impulsive(adjective, careless, natural, bold)
19
rash(adjective, dull, sharp, rough, rude)
17
reckless(adjective, careless, careful, casual)
16
inconsiderate(adjective, sharp, rough, rude, careless)
16
unmindful(adjective, sharp, rude, careless, indifferent)
13
hasty(adjective, sharp, rough, rude, careless)
13
inattentive(adjective, sharp, rude, careless, indifferent)
12
inadvertent(adjective, careless, indifferent, stupid)
12
incautious(adjective, careless, careful, casual)
12
negligent(adjective, sharp, rude, careless, indifferent)
11
indiscreet(adjective, dull, sharp, rough, rude)
10
irrational(adjective, careless, stupid, unreasonable)
10
neglectful(adjective, sharp, rude, careless, indifferent)
10
senseless(adjective, dull, simple, wrong, slow)
9
stupid(adjective, dull, careless, indifferent)
8
brainless(adjective, dull, silly, stupid)
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APASmart Define. (2015). unthinking thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unthinking/thesaurus/synonyms
ChicagoSmart Define. 2015. "unthinking thesaurus" https://smartdefine.org/unthinking/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unthinking thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unthinking/thesaurus/synonyms>.
MLASmart Define. "unthinking thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/unthinking/thesaurus/synonyms>