Libido

Psychological or sexual drive or energy

In psychology, libido is psychic drive or energy, usually conceived of as sexual in nature, but sometimes conceived of as including other forms of desire. The term libido was originally used by the neurologist and pioneering psychoanalyst Sigmund Freud who began by employing it simply to denote sexual desire. Over time it came to signify the psychic energy of the sexual drive, and became a vital concept in psychoanalytic theory. Freud's later conception was broadened to include the fundamental energy of all expressions of love, pleasure, and self-preservation.

This keyword could refer to multiple things. Here are some suggestions: