Lapsus

Involuntary mistake made while writing or speaking. According to Freud in his early psychoanalytic theory it represents a missed deed that hides a subconscious desire.

In literature there are a number of different lapsus depending on the mode of communication:
 * Lapsus Linguae (pl. same): slip of the tongue.
 * Lapsus Calami: slip of the pen. With the variation of Lapsus Clavis: slip of the typewriting
 * Lapsus Memoriae: slip of memory.