ENGLISH
REFERENCE

schizophrenia

n. uncountable
C2 Proficiency US //ˌskɪtsəˈfɹiniə// UK //skˌɪtsəfɹˈiːniə// schizophre·nia Informal

n. a serious mental illness where a person has trouble telling what is real and what is not. It often involves hearing voices or having very strange thoughts.

n. a chronic mental disorder characterised by distortions in thinking, perception, emotions, and sense of self. It often manifests as auditory hallucinations, delusions, or disordered speech.


SIMPLE

Doctors use specific tests to diagnose schizophrenia.

CONTEXTUAL

The patient was diagnosed with schizophrenia after experiencing persistent hallucinations that interfered with his daily life.

COMPLEX

While schizophrenia is often misunderstood by the public as a split personality, it is actually a complex neurodevelopmental condition requiring long-term psychiatric management and support.

Origin

From German Schizophrenie (coined by Eugen Bleuler), from Ancient Greek σχίζω (skhízō, “to split”) + φρήν (phrḗn, “mind, heart, diaphragm”) + English -ia. A combination of schizo- + -phrenia.

Usage

Uncountable when referring to the medical condition; can be used with 'a' or in the plural when referring to specific types or cases.

Pitfall

He has a schizophreniaHe has schizophreniaAs a medical condition, it is typically uncountable and does not take an indefinite article.

© 2026 English Reference