127 entries under irrational topic. ×

3
wrong(adjective, careless, stupid, crazy, unreasonable)
2
arbitrary(stupid, senseless, perverse, caprice)
2
awkward(rough, crude, uncouth, arbitrary)
2
buggy(adjective, silly, crazy, mad)
2
contradictory(adjective, stupid, senseless, absurd)
2
crackbrained(crazy, hysterical, psychotic)
2
deranged(adjective, simple, wild, silly, stupid)
2
hysterical(adjective, rough, wild, stupid, crazy)
2
incoherent(stupid, unreasonable, senseless, illogical)
2
unreasoned(stupid, senseless, arbitrary, perverse)
2
unsound(adjective, wrong, silly, stupid, crazy)
1
bedlamite(adjective, simple, silly, crazy, mad)
1
cracked(adjective, simple, wild, silly, stupid)
1
crazed(adjective, rough, wild, silly, stupid)
1
double talk(expression, adjective, silly, stupid, insignificant)
1
far-fetched(adjective, stupid, senseless, arbitrary)
1
headstrong(stupid, senseless, impulsive, hasty)
1
impracticable(adjective, rough, wild, strange, silly)
1
off the wall(expression, adjective, idiom, silly, stupid)
1
perverse(adjective, arbitrary)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>