Words That Rhyme With "Succedaneum" :
3 syllables:
conium, cranium, Keynesian, minium, rhenium
4 syllables:
actinium, Albanian, ammonium, Asplenium, Bahamian, biennium, bucranium, calcaneum, decennium, delphinium, dominium, einsteinium, euphonium, geranium, germanium, Guamanian, harmonium, helenium, hydronium, hymenium, Iconium, illinium, ionium, Iranian, meconium, millennium, neptunium, phosphonium, plutonium, polonium, proscenium, prytaneum, quadrennium, quinquennium, Romanian, Roumanian, Rumanian, ruthenium, selenium, septennium, stramonium, sulfonium, sulphonium, syconium, Tanzanian, Tasmanian, titanium, triclinium, triennium, Ukrainian, Uranian, uranium, virginium, vulcanian, zirconium
5 syllables:
androconium, archegonium, ascogonium, bimillennium, carpogonium, chondrocranium, condominium, cuprammonium, diazonium, endocranium, Herculaneum, hydroxonium, Lithuanian, Michiganian, oogonium, panamanian, pandemonium, parascenium, pelargonium, Pennsylvanian, pericranium, perigonium, peritoneum, Pomeranian, positronium, protactinium, prothalamium, sporogonium, subterranean, suppedaneum
6 syllables:
epithalamion, epithalamium, ferrotitanium, ferrozirconium, hexamethonium, hippopotamian, Mediterranean, Mesopotamian, protoactinium, spermatogonium, superterranean