A schizophrenic is a person who is suffering from schizophrenia.
He was diagnosed as a paranoid schizophrenic.
Schizophrenic is also an adjective.
...a schizophrenic patient.
...schizophrenic tendencies.
2. adjective
Someone's attitude or behaviour can be described as schizophrenic when they seem to have very different opinions or purposes at different times.
...the schizophrenic mood of the American public.
schizophrenic in British English
(ˌskɪtsəʊˈfrɛnɪk)
adjective
1.
exhibiting symptoms of schizophrenia
2. informal, offensive
experiencing or maintaining contradictory attitudes, emotions, etc
noun
3.
a schizophrenic person
▶ USAGE It is preferable to refer to a person as someone with a diagnosis of schizophrenia rather than as a schizophrenic. The general use of the word to mean 'contradictory' is also best avoided. Suitablealternatives are contradictory, inconsistent, incoherent