an immoral style of living

immoral self-indulgence

the fall to a lower standard (in morals, art, literature etc)

perversion; deterioration of morality

(an instance of) strong longing (for something)

want, longing

(an instance of) a great desire to possess something, especially strong sexual desire

appetite, passion

(a particular kind of) evil conduct or practice; an apparatus with strong clamps in which things can be held tightly while being cut, shaped etc; second in authority; deputy

bad habit; sin