Synonyms for Orgy (same or very similar meaning)
WordNet sense 1 (any act of immoderate indulgence):
binge, splurgeWordNet sense 2 (a wild gathering involving excessive drinking and promiscuity):
bacchanal, bacchanalia, debauch, debauchery, riot, saturnalia, drunken revelryFrom the ODE community, based on WordNetadd/edit