Here's what rhymes with comparativum.
Words that almost rhyme with comparativum
diesem uneven diesen reason season lesion treason adhesion heathen reafon artesian threesome deletion accretion elision repletion completion secretion cohesion depletion preseason postseason excretion amphotericin labium teatime rerum cerium chiefdom freedom fiefdom francium sheikdom sheikhdom museum hominum encomium trapezium capsicum cilium arboretum samarium coliseum mausoleum imperium solarium protactinium