[Coll.]; crazy, crazed, aliene^, non compos mentis; not right, cracked, touched; bereft of reason; all possessed, unhinged, unsettled in one's mind; insensate, reasonless, beside oneself, demented, daft; phrenzied^, frenzied, frenetic; possessed, possessed with a devil; deranged, maddened, moonstruck; shatterpated^; mad-brained, scatter brained, shatter brained, crackbrained; touched, tetched [Coll.]; off one's head.