218 entries under foolish topic. ×

5
unintelligent(adjective, weak, simple, silly)
4
balmy(adjective, simple, wild, silly)
4
barmy(adjective, silly, unwise)
4
contradictory(adjective, stupid, senseless, absurd)
4
cracked(adjective, wrong, wild, silly)
4
dotty(adjective, weak, simple, silly)
4
flighty(adjective, simple, careless, stupid)
4
foolhardy(adjective, simple, careless, wild, silly)
4
groundless(adjective, unreasonable, illogical, defended)
4
indiscreet(adjective, weak, simple, careless, silly)
4
irresponsible(adjective, wrong, wild, silly)
4
mental(adjective, silly, stupid, disturbed)
4
moonstruck(adjective, silly, stupid, insane)
4
of unsound mind(expression, adjective, idiom, stupid)
4
outlandish(adjective, unusual, strange, silly)
4
psychotic(adjective, stupid, crazy, mad)
4
raging(adjective, wrong, violent, wild, silly)
4
strange(unusual, silly, ridiculous, unwise)
4
touched(adjective, wrong, unusual, wild, strange)
4
unfounded(adjective, unreasonable, illogical, defended)
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APASmart Define. (2015). irrational thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/irrational/thesaurus/synonyms
ChicagoSmart Define. 2015. "irrational thesaurus" https://smartdefine.org/irrational/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, irrational thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/irrational/thesaurus/synonyms>.
MLASmart Define. "irrational thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/irrational/thesaurus/synonyms>