In this sense, the antonym of libido is destrudo.

Literary criticism has been almost more prepared than psychoanalysis to make at least metaphorical use of the term 'Destrudo'.

This produces strong emotions of terror while at the same time narcissistic libido (also known as ego-libido) or destrudo is built up.

Weiss related aggression/destrudo to secondary narcissism, something generally only described in terms of the libido turning towards the self.

However Freud himself favoured neither term - mortido or destrudo - which worked against either of them gaining widespread popularity in the psychoanalytic literature.

Bernard Golse, "Destrudo"

His disciple and collaborator Weiss, however, chose destrudo; and it was this term that was later taken up by Charles Brenner.

Mortido was introduced by Freud's pupil Paul Federn to cover the psychic energy of the death instinct, something left open by Freud himself: Edoardo Weiss preferred to use destrudo.

Artistic images were seen by Joseph Campbell in terms of "incestuous 'libido' and patricidal 'destrudo'"; while literary descriptions of the conflict between destrudo and libido are still fairly widespread in the 21st century.