8
batty(adjective, wild, silly, foolish, stupid)
8
blind(adjective, uncontrolled)
8
daft(adjective, weak, simple, wild, silly)
8
extreme(adjective, strange, stupid, unreasonable, ill)
8
moronic(adjective, weak, simple, silly, foolish)
8
unreasoning(adjective, careless, foolish, stupid, unreasonable)
7
berserk(adjective, rough, wild, silly, foolish)
7
disconnected(adjective, loose, foolish, crazy, unreasonable)
7
extravagant(adjective, severe, rough, harsh, strange)
7
ill-advised(weak, simple, careless, silly, foolish)
7
imprudent(adjective, weak, simple, severe, harsh)
7
inept(adjective, careless, stupid, unthinking, obtuse)
7
invalid(adjective, wrong, false, foolish, crazy)
7
loony(adjective, weak, simple, careless, wild)
7
psycho(adjective, silly, foolish, insane, unwise)
7
reasonless(adjective, foolish, stupid, mad, unreasonable)
7
screwy(adjective, wrong, wild, silly, foolish)
7
unreasoned(adjective, reason, foolish, stupid, mad)
7
witless(adjective, weak, simple, careless, silly)
6
arbitrary(adjective, foolish, stupid, chance, senseless)
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APASmart Define. (2015). irrational thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/irrational/thesaurus/synonyms
ChicagoSmart Define. 2015. "irrational thesaurus" https://smartdefine.org/irrational/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, irrational thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/irrational/thesaurus/synonyms>.
MLASmart Define. "irrational thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/irrational/thesaurus/synonyms>