deranged
adjective mad, crazy, insane, distracted, frantic, frenzied, irrational, maddened, crazed, lunatic, demented, unbalanced, berserk, delirious, unhinged, loopy (informal), crackpot (informal), out to lunch (informal), barking mad (slang), barking (slang), gonzo (slang), doolally (slang), off your trolley (slang), up the pole (informal), not the full shilling (informal), wacko or whacko (slang) A deranged man shot and killed 14 people in the main square.