141 entries under adjective topic. ×

10
non compos mentis(expression, idiom, law, mad)
10
touched(informal, insane, sane)
9
balmy
9
bats
9
daffy(slang, informal, crazy, mad)
9
fruity(slang, mad, insane, sane)
9
loopy
9
maniac(crazy, mad, sick, insane)
9
mentally ill(expression, idiom, crazy, sick)
9
of unsound mind(expression, idiom, insane, sane)
9
screwy(slang, insane, sane)
9
unhinged
8
cuckoo(slang, insane, sane)
8
kooky
8
moonstruck(insane, sane)
8
psychotic(crazy, mad, insane, crazed)
7
brainsick(crazy, sick, insane, sane)
7
buggy(slang, sane, off, dotty)
7
distraught(crazy, sick, insane, sane)
7
irrational(crazy, mad, insane, distracted)
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APASmart Define. (2015). loco thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/loco/thesaurus/synonyms
ChicagoSmart Define. 2015. "loco thesaurus" https://smartdefine.org/loco/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, loco thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/loco/thesaurus/synonyms>.
MLASmart Define. "loco thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/loco/thesaurus/synonyms>