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