Concubinage rhymes with:
orphanage, drainage, dunaj, manage, orphanage, tonnage, adage, anchorage, assemblage, baggage, bugaj, cabbage, carthage, cartilage, cartridge, cleavage, cooperage, cordage, cottage, courage, coverage, damage, dosage, drainage, dulmage, dunaj, grapage, heritage, hermitage, homage, image, knowledge, language, leakage, lineage, linkage, lovage, luggage, manage, message, mileage, mintage, miscarriage, mortgage, newedge, orphanage, outage, package, parentage, partridge, passage, peerage, percentage, pilgrimage, plumage, porridge, portage, postage, prepackage, privilege, sacrilege, salvage, sarage, sausage, savage, sewage, shortage, spoilage, storage, tonnage, usage, vantage, village, visage, voltage, voyage, wattage, wreckage