decadence Play nounMoral or cultural decline as characterized by excessive indulgence in pleasure or luxury. SYNONYMS corruptiondebaucherydegeneracydepravitydissipationdissolutenessepicureanismhedonismimmoderatenessimmoralityintemperancelack of controllack of moralslack of principleslack of restraintlack of self-controllicentiousnesslouchenessmoral decayperversionself-indulgencesinfulnesssybaritismvicevoluptuousnesswantonness