The Oxford Thesaurus An A-Z Dictionary of Synonyms - decadentadj.

1) declining, decaying, deteriorating, debased, degenerating, falling off, on the wane, withering, degenerative: The decadent literature of the period was a reflection of the decline in moral standards. 2) corrupt, dissolute, immoral, debauched, dissipated, self-indulgent, degenerate: His decadent behaviour brought him to the attention of the police.