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