Synonyms and related words :
abnormal, amiss, askew, awry, balmy, bananas, barmy, bats, batty, bereft of reason, berserk, bonkers, brainsick, cockeyed, convulsed, crackbrained, cracked, crazed, crazy, cuckoo, daft, deluded, demented, deprived of reason, dippy, disarranged, discomfited, discomposed, disconcerted, dislocated, disordered, disorderly, disorganized, disoriented, distraught, disturbed, dotty, flighty, hallucinated, haywire, in disorder, insane, irrational, kooky, loco, loony, lunatic, mad, maddened, maniac, manic, mazed, mental, mentally deficient, meshuggah, misplaced, moon-struck, non compos, non compos mentis, not all there, not right, nuts, nutty, odd, of unsound mind, off, on the fritz, out of gear, out of joint, out of kelter, out of kilter, out of order, out of place, out of tune, out of whack, perturbed, potty, psycho, psychotic, queer, reasonless, roily, screwy, senseless, shuffled, sick, stark-mad, stark-staring mad, strange, tetched, touched, turbid, turbulent, unbalanced, unhinged, unsane, unsettled, unsound, upset, wacky, wandering, witless