Synonyms of 'demented'

abnormal, brainsick, crackbrained, cracked, crazed, crazy, daft, delirious, deranged, distraught, flighty, frenzied, hysterical, insane, irrational, loco, lunatic, mad, maniac, manic, mental, non compos mentis, odd, off, psycho, queer, senseless, sick, strange, tetched, touched, unbalanced, unsettled, unsound, wandering, witless