Amnesia

(n.) Forgetfulness; also, a defect of speech, from cerebral disease, in which the patient substitutes wrong words or names in the place of those he wishes to employ.

Thesaurus Entries

agnosia, blackout, catalepsy, cataplexy, catatonic stupor, daydreaming, daze, dream state, fugue, fugue state, hypnotic trance, loss of memory, reverie, sleepwalking, somnambulism, stupor, trance, word deafness