122 entries under foolish topic. ×

2
temerarious(adjective, careless, thoughtless, rash)
2
unsound(unreasonable, illogical)
1
asinine(adjective, careless, wild, silly)
1
daydreaming(adjective, careless, silly, remote)
1
deficient(dull, silly, stupid, unintelligent)
1
dense(dull, silly, stupid, unintelligent)
1
distraught(adjective, wrong, careless, indifferent)
1
doltish(dull, careless, silly, stupid)
1
dumb(dull, silly, stupid, unintelligent)
1
half-baked(dull, slight, careless, stupid)
1
half-witted(dull, silly, stupid, unintelligent)
1
incurious(adjective, careless, indifferent, idle)
1
leaving self wide open(expression, careless, thoughtless, rash)
1
loony(careless, stupid, unreasonable, obtuse)
1
ludicrous(adjective, dull, stupid, unintelligent)
1
meaningless(dull, slight, silly, stupid)
1
mooning(adjective, careless, silly, remote)
1
moony(adjective, careless, silly, remote)
1
obtuse(adjective, dull, simple, slow, careless)
1
off the deep end(expression, careless, thoughtless, rash)
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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>