in the classical psychoanalytic theory of Sigmund Freud, the second stage of psychosexual development, typically occurring during the 2nd year of life, in which the child’s interest and sexual pleasure are focused on the expulsion and retention of feces and the sadistic instinct is linked to the desire to both possess and destroy the object. Fixation during this stage results in an anal personality. Also called anal phase. See also anal-expulsive phase; anal-retentive phase; anal-sadistic phase.