libido [Lat.,=lust], psychoanalytic term used by Sigmund Freud to identify instinctive energy with the sex instinct. For Freud, libido is the generalized sexual energy of which conscious activity is the expression. C. G. Jung used the term synonymously with instinctive energy in general. Many psychiatrists now feel that Freud overemphasized the concept of libido as the determinant of personality development and did not adequately emphasize the results of socializing forces. The term drive is often used instead of libido but without the sexual implications of the latter. See psychoanalysis.

Physiological and emotional energy associated with the sex drive. The concept was originated by Sigmund Freud, who saw the libido as linked not only with sexual desire but with all constructive human activity. He believed that psychiatric illnesses were the result of misdirecting or suppressing the libido. Carl Gustav Jung used the term more broadly to encompass all life processes in all species.

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