The Id is in psychoanalytic theory, the structure of personality that contains the sexual and aggressive instincts.
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Id is the unconscious part of the mind concerned with sexual and aggressive instincts within Freudian theory.
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The Id is according to Freud, the powerful, entirely unconscious portion of the personality that contains all instincts and is therefore the driving force for the entire personality.
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The Id is the part of the personality that, according to psychoanalytic theory, contains powerful urges and drives for gratification and satisfaction.
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The Id is in the Freudian theory, the primitive, unconscious part of the personality that operates irrationally and acts on impulse, passion, and animalistic urges. One of the three structures of the mind in psychoanalysis. Of these structures, it is the most primitive; the source of sex and death drives; obeys the "pleasure principle."