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