12
madness(noun, disorder, complex, deviation, sane)
12
paranoia(noun, disorder)
9
mania(noun, disorder, sane, stupidity, foolishness)
9
mental disease(noun, expression, idiom, disorder)
8
insanity(noun, disorder, complex, deviation, sane)
8
mental disorder(noun, expression, disorder, stupidity, foolishness)
7
derangement(noun, disorder, complex, deviation, sane)
7
lunacy(noun, disorder, sane, stupidity, foolishness)
6
dementia(noun, sane, stupidity, foolishness, folly)
6
neurosis(noun, disorder, complex, disturbance, stupidity)
6
psychopathy(noun, disorder, complex, deviation, sane)
6
aberration(noun, disorder, psychology, complex, deviation)
4
craziness(noun, disorder, sane, stupidity, foolishness)
4
alienation(noun, psychology, sane)
4
psychosis(noun, disorder, stupidity, foolishness, folly)
3
brainsickness(noun, disturbance, sane, derangement)
3
schizophrenia(noun, disorder)
3
unbalance(noun, sane, stupidity, foolishness, folly)
3
loss of mind(noun, expression, idiom, disorder)
3
mental sickness(noun, disorder)
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APASmart Define. (2015). mental illness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/mental_illness/thesaurus/synonyms
ChicagoSmart Define. 2015. "mental illness thesaurus" https://smartdefine.org/mental_illness/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, mental illness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/mental_illness/thesaurus/synonyms>.
MLASmart Define. "mental illness thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/mental_illness/thesaurus/synonyms>