Delusion
Delusion noun - A conception or image created by the imagination and having no objective reality.
Mental illness and delusion are semantically related. In some cases you can use "Mental illness" instead a noun "Delusion".
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.
Show all Definitions
Synonyms for Mental illness
Delusion and mental illness are semantically related. Sometimes you can use "Delusion" instead a noun phrase "Mental illness".
Mutual synonyms
Related pairs
- derangement and delusion
- derangement and mental illness
- madness and delusion
- madness and mental illness
- mania and delusion
- mania and mental illness
- obsession and delusion
- obsession and mental illness
- hallucination and delusion
- hallucination and mental illness
- confusion and delusion
- confusion and mental illness
- neurosis and delusion
- neurosis and mental illness
Both terms in one sentence
- Subsequent impenetrable pop-culture references and desperate plans have done little to dispel the idea, and it's true that humanity is more prone to delusion and mental illness than other races, but there is still a large element of fear and prejudice involved.
Source: Literature / The Jenkinsverse - In Shutter Island, he's a man jailed for killing his wife after ignoring her mental illness, which causes her to murder their kids, and he creates a delusion that he's after the man who killed her.
Source: Dueling Works / Film Cross Genre -
Unfortunately, this simple delusion brought on by mental illness has been horribly exacerbated by a demon/angel now living within Maggie herself.
Source: Comic Book / Gotham City Sirens
Cite this Source
Mental illness and Delusion. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/delusion/mental_illness
Delusion & Mental illness. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/delusion/mental_illness>.
Mental illness or Delusion. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/delusion/mental_illness.
Google Ngram Viewer shows how "delusion" and "mental illness" have occurred on timeline