Psychotic describes a state in which somebody has lost contact with reality. Hallucinations, or beliefs nothing can shift.
It is a clinical term with a precise meaning, and psychosis is a symptom rather than a diagnosis, appearing in schizophrenia, severe depression, some physical illnesses and certain drug reactions. Most people experiencing it are far more likely to be harmed than to harm anybody, which is the opposite of what films suggest. Using it loosely to mean violent or unpredictable is inaccurate and does real damage.
1adjectivepsychoticExperiencing a loss of contact with reality.
“He was treated for a psychotic episode and recovered fully.”
Ancient Greek
ψύχωσις — animation, principle of life
English
psychosis
English, today
psychotic
Derived in English from psychosis + -tic; compare French psychotique, German psychotisch. Attested from the late 19th century. Compare earlier neurotic. psychosis comes from psych- + -osis. Not related to Ancient Greek ψύχωσις (“animation, principle of life”).
Etymology from Wiktionary, CC BY-SA