Here's what rhymes with halfbarbarian.
barbarian carrion agrarian librarian ovarian vegetarian clarion vulgarian authoritarian proletarian sectarian antiquarian libertarian sanitarian cnidarian utilitarian egalitarian totalitarian trinitarian veterinarian octogenarian centenarian seminarian communitarian parliamentarian nonsectarian nonagenarian humanitarian disciplinarian latitudinarian septuagenarian valetudinarian sexagenarian Words that almost rhyme with halfbarbarian
barium aquarium chameleon honorarium sanitarium vivarium nobelium planetarium ferryman ferrymen lesbian pedestrian thespian vestrymen vestryman equestrian