Immoralise

But if this charge be true, then it can be no less true that the Messiah has failed—that the Christian religion is not of divine origin. since its effect and operation have been to deprave and immoralise mankind.

Source: wiktionary

After this, between the hours of 8 and 11, I now and then go between decks, and if I see or hear anything amiss or tending to immoralise, I instantly administer reproof and report the offender or offenders to the Commanding Officer, whom I always find ready and active to co-operate in the promotion of virtue andd in checking vice.

Source: wiktionary

The push for humanity to step even further away from morality, to immoralise or get rid of morality altogether, in an effort to make us all conflict-free, was proposed by Nietzsche.

Source: wiktionary