165 entries under foolish topic. ×

4
harebrained(adjective, careless, wild, strange, excited)
4
immoral(adjective, careless, reckless, negligent)
4
injudicious(adjective, careless, chance, casual)
4
irrational(adjective, wrong, wild, silly)
4
nonsensical(adjective, silly, stupid, fantastic)
4
unthinking(adjective, careless, stupid, careful)
3
dumb(stupid, impractical, half-baked, doomed)
3
hotheaded(adjective, wild, thoughtless, rash)
3
ill-advised(adjective, careless, wild, stupid)
3
ill-considered(adjective, careless, thoughtless, reckless)
3
immature(adjective, careless, stupid, absurd)
3
inane(adjective, careless, silly, stupid)
3
ludicrous(adjective, silly, stupid, fantastic)
3
moronic(adjective, stupid, impractical, half-baked)
3
nutty(silly, stupid, unwise)
3
screwy(silly, stupid, unwise)
3
senseless(adjective, wrong, wild, stupid)
2
balmy(silly, stupid, fantastic, absurd)
2
cuckoo(adjective, wrong, wild, silly)
2
daft(adjective, wrong, wild, silly)
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APASmart Define. (2015). irresponsible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/irresponsible/thesaurus/synonyms
ChicagoSmart Define. 2015. "irresponsible thesaurus" https://smartdefine.org/irresponsible/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, irresponsible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/irresponsible/thesaurus/synonyms>.
MLASmart Define. "irresponsible thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/irresponsible/thesaurus/synonyms>