Disorder
Disorder noun - A state in which everything is out of order.
Mental illness and disorder are semantically related. In some cases you can use "Mental illness" instead a noun "Disorder".
Mental illness
Mental illness noun - Any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention.
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Synonyms for Mental illness
Disorder and mental illness are semantically related. Sometimes you can use "Disorder" instead a noun phrase "Mental illness".
Mutual synonyms
Both terms in one sentence
- It's part of the diagnostic criteria of several mental illness including schizophrenia, delusional disorder, and bipolar disorder.
Source: Referential Mania -
She suffered from severe mental illness (likely bipolar disorder) and was institutionalized by her own son later in life.
Source: Henpecked Husband - Like many mental illness tropes deconstructed in Brainbent when Sollux, who has rapid cycling bipolar disorder, tries going off his meds once.
Source: No Medication for Me
Cite this Source
Mental illness and Disorder. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/disorder/mental_illness
Disorder & Mental illness. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/disorder/mental_illness>.
Mental illness or Disorder. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/disorder/mental_illness.
Google Ngram Viewer shows how "disorder" and "mental illness" have occurred on timeline