abnormal, bereft of reason, brainsick, catatoniac, certifiable case, crackbrained, cracked, crazed, crazy, daft, deluded, demented, deprived of reason, deranged, disoriented, distraught, flighty, hallucinated, insane, irrational, loco, lunatic, mad, maddened, manic, manic-depressive, mazed, mental, mental case, mentally deficient, meshuggah, moon-struck, non compos, non compos mentis, not all there, not right, odd, of unsound mind, off, paranoiac, paranoid, psychopath, psychopathic case, psychopathic personality, psychotic, queer, reasonless, schiz, schizo, schizoid, schizophrenic, schizy, senseless, sick, stark-mad, stark-staring mad, strange, tetched, touched, unbalanced, unhinged, unsane, unsettled, unsound, wandering, witless

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