Real Dictionary

parapraxis in American English
an action in which one's conscious intention is not fully carried out, as in the mislaying of objects, slips of the tongue and pen, etc.: thought to be generally due to a conflicting unconscious intention
noun: a slip of the tongue or pen, forgetfulness, misplacement of objects, or other error thought to reveal unconscious wishes or attitudes

parapraxis in British English
noun: a minor error in action, such as slips of the tongue, supposedly the result of repressed impulses