4
cracked(adjective, informal, sane, unwell)
4
crackers(adjective, crazy, sick, sane, off)
4
dotty(adjective, crazy, sick, sane, off)
4
nutty(adjective, slang, sane, unwell)
4
of unsound mind(expression, adjective, idiom, sane, off)
4
schizophrenic(adjective, unwell)
4
screwy(adjective, slang, sane)
4
unsound(adjective, crazy, sick, sane)
3
loony(adjective, informal, sane, unwell, cuckoo)
3
cuckoo(adjective, slang, sane, unwell, neurotic)
3
fruity(adjective, slang, mad, insane, sane)
3
bananas(adjective, slang, sane)
3
maniac(adjective, crazy, mad, sick, insane)
3
touched(adjective, sane, unwell)
3
unstable(adjective, mad, insane, psychiatric)
3
buggy(adjective, slang, sane, off, dotty)
3
disordered(adjective, sane, off, dotty)
3
distraught(adjective, crazy, sick, sane)
3
moonstruck(adjective, insane, sane)
3
off(adjective, sane, dotty)
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APASmart Define. (2015). mentally ill thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mentally_ill/thesaurus/synonyms
ChicagoSmart Define. 2015. "mentally ill thesaurus" https://smartdefine.org/mentally_ill/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, mentally ill thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mentally_ill/thesaurus/synonyms>.
MLASmart Define. "mentally ill thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/mentally_ill/thesaurus/synonyms>