132 entries under foolish topic. ×

4
rabid(adjective, violent, stupid, mad)
4
sophistic(adjective, mad, irrational, worthless)
4
witless(adjective, weak, simple, careless, silly)
3
baseless(adjective, poor, worthless, unwarranted)
3
batty(adjective, silly, stupid, crazy)
3
cockamamie(weak, simple, illogical)
3
cracked(silly, stupid)
3
daft(adjective, weak, simple, silly)
3
dotty(adjective, weak, simple, silly)
3
flaky(adjective, wrong, careless, silly)
3
ill-considered(weak, simple, careless, silly)
3
irresponsible(adjective, silly, stupid, chance)
3
kooky(adjective, weak, simple, silly)
3
loony(adjective, weak, simple, stupid)
3
mistaken(adjective, wrong, false, unsound)
3
nuts(adjective, silly, stupid)
3
unreasoning(adjective, careless, stupid, irrational)
3
weak(adjective, simple, silly, thoughtless)
3
zany(adjective, weak, simple, silly)
2
bizarre(adjective, strange, silly, stupid)
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APASmart Define. (2015). unreasonable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unreasonable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unreasonable thesaurus" https://smartdefine.org/unreasonable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unreasonable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unreasonable/thesaurus/synonyms>.
MLASmart Define. "unreasonable thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/unreasonable/thesaurus/synonyms>