WordNet (r) 3.0 (2006):

psychotic
    adj 1: characteristic of or suffering from psychosis
    n 1: a person afflicted with psychosis [syn: psychotic,
         psychotic person, psycho]

Moby Thesaurus II by Grady Ward, 1.0:

106 Moby Thesaurus words for "psychotic":
   abnormal, alcoholic, alternating personality,
   antisocial personality, bats, batty, bedlamite, bonkers,
   brain-damaged, brain-injured, catatoniac, catatonic, certifiable,
   certifiable case, cracked, crackpot, crazy, daft, demented,
   deranged, disordered personality, disturbed, disturbed personality,
   double personality, drug user, dual personality,
   emotionally unstable personality, escapist, exceptional,
   functional, hostile personality, hypochondriac, hypochondriast,
   idiot, imaginary invalid, immature personality,
   inadequate personality, inferior personality, insane, kook, loony,
   lunatic, mad, madman, malade imaginaire, maladjusted personality,
   maniac, manic-depressive, mental, mental case,
   mentally defective personality, mentally ill, mentally sick,
   moral insanity, multiple personality, neuropath, neuropsychiatric,
   neurotic, neurotic personality, non compos mentis, not all there,
   nut, nuts, nutty, of unsound mind, paranoiac, paranoid,
   paranoid personality, perverse personality, psychiatric, psycho,
   psychobiological, psychodynamic, psychogenic, psychological,
   psychoneurological, psychoneurotic, psychopath, psychopathic,
   psychopathic case, psychopathic personality, psychopathological,
   psychophysical, psychophysiological, psychosexual, psychosocial,
   psychosomatic, psychotic personality, raving, schiz, schizo,
   schizoid, schizoid personality, schizophrenic, schizy, screwball,
   seclusive personality, sexual psychopath, shut-in personality,
   sociopath, split personality, unbalanced, unhinged, valetudinarian,
   valetudinary, weak personality