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