273 entries under adjective topic. ×

4
luny(noun, slang, sick, mad person)
4
meshuga
4
unearthly(knowledge, ability)
4
unsound(foolish, unreasonable, sane, illogical)
4
whacky
4
wrong(foolish, unreasonable, sane, illogical)
3
bugs
3
cockamamie(weak, simple, wrong, silly)
3
dim-witted
3
doltish(weak, simple, careless, silly)
3
fatuitous
3
ignorant(foolish, impractical, half-baked, doomed)
3
infatuated
3
madcap(noun, person, silly, crazy)
3
odd(wild, strange, silly, foolish)
3
off
3
off one's rocker(idiom, sane)
3
rabid(crazy, mad, odd, insane)
3
rash(crazy, mad, odd, insane)
3
schizophrenic(noun, silly, foolish, stupid)
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APASmart Define. (2015). loony thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/loony/thesaurus/synonyms
ChicagoSmart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, loony thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>.
MLASmart Define. "loony thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms>