Here's what rhymes with adversarium.
barium vivarium aquarium honorarium sanitarium planetarium Words that almost rhyme with adversarium
ovarian carrion agrarian clarion vulgarian barbarian sectarian vegetarian chameleon seminarian nobelium authoritarian librarian proletarian antiquarian libertarian veterinarian centenarian sanitarian cnidarian utilitarian egalitarian trinitarian octogenarian nonsectarian nonagenarian humanitarian totalitarian disciplinarian latitudinarian valetudinarian sexagenarian communitarian parliamentarian septuagenarian fermium millennium gentium proscenium requiem biennium technetium lutetium compendium quadrennium lawrencium endometrium