Synonyms for Debauch (same or very similar meaning)
WordNet sense 1 (corrupt morally or by intemperance or sensuality):
corrupt, debase, demoralize, deprave, misdirect, pervert, profane, subvert, vitiate, demoralise, pervertWordNet sense 2 (a wild gathering involving excessive drinking and promiscuity):
bacchanal, bacchanalia, debauchery, orgy, riot, saturnalia, drunken revelryFrom the ODE community, based on WordNetadd/edit