84 entries under foolish topic. ×

14
impulsive(adjective, unstable, unreasonable, quick)
13
unobservant(noun, adjective, cold, indifferent)
12
injudicious(adjective, sharp, rough, indifferent)
12
loose(adjective, calm, cool, relaxed, wild)
11
absent-minded(noun, adjective, cold, stupid)
11
carefree(adjective, feature, state, weak, relaxed)
11
feckless(adjective, feature, state, indifferent, wild)
11
improvident(adjective, casual, bold, extravagant)
10
oblivious(noun, adjective, soft, indifferent, silly)
8
brash(adjective, sharp, rough, wild)
7
capricious(adjective, easy, thoughtless, impulsive)
6
ill-considered(adjective, stupid, thoughtless, reckless)
6
simple(adjective, silly, natural, senseless)
6
unwise(adjective, thoughtless, inappropriate, rash)
5
giddy(adjective, easy, wild, silly, loose)
4
fickle(adjective, loose, unstable, unreasonable)
4
flighty(adjective, stupid, unstable, unreasonable)
4
ill-advised(adjective, wild, stupid, quick)
4
impolitic(adjective, thoughtless, inappropriate, rash)
4
unaware(adjective, indifferent, silly, unconcerned)
10 years ago|44k views|share |citing 
APASmart Define. (2016). careless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/careless/thesaurus/synonyms
ChicagoSmart Define. 2016. "careless thesaurus" https://smartdefine.org/careless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, careless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/careless/thesaurus/synonyms>.
MLASmart Define. "careless thesaurus" 3 March 2016. Web. 24 September 2026. <https://smartdefine.org/careless/thesaurus/synonyms>