1) Error 2) Fault 3) Miscue 4) Mistake 5) Slip 6) Slip-up 
blunder; error; mistake
(par″ә-prak´sis) pl. paraprax´es a lapse of memory or mental error, such as a slip of the tongue or misplacement of an object, which, in psychoanalytic theory, is due to unconscious associations and motives; commonly called a “freudian slip.”
noun a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.