Here's what rhymes with quinquennium.
cerium encomium museum labium cilium samarium mausoleum imperium solarium coliseum francium trapezium protactinium Words that almost rhyme with quinquennium
dn zijn paean peon lndian chorion ruffian boolean occafion plebeian protean epicurean rerum diesem teatime freedom hominum chiefdom threesome fiefdom sheikdom sheikhdom capsicum arboretum