degenerate

(noun) a person whose behavior deviates from what is acceptable especially in sexual behavior. Synonyms: pervert, deviant, deviate.

(verb) grow worse. Synonyms: devolve, deteriorate, drop. Examples: "Her condition deteriorated." "Conditions in the slums degenerated." "The discussion devolved into a shouting match."

(adj) unrestrained by convention or morality. Synonyms: debauched, degraded, dissipated, dissolute, libertine, profligate, riotous, fast. Examples: "Congreve draws a debauched aristocratic society." "Deplorably dissipated and degraded." "Riotous living." "Fast women."