Is it farther or further?
psychotic psy·chot·ic (sī-kŏt'ĭk)
Of, relating to, or affected by psychosis. n.
A person affected by psychosis.
Plural psychoses (sī-kō'sēz)
A mental state caused by psychiatric or organic illness, characterized by a loss of contact with reality and an inability to think rationally. A psychotic person often behaves inappropriately and is incapable of normal social functioning.
psychotic adjective (sī-kŏt'ĭk)