Arnold rhymes with:
annulled, channeled, donald, empaneled, flanneled, funneled, impaneled, macdonald, mcdonald, o'donald, odonald, paneled, reginald, reynold, ronald, signaled, signalled
Arnold sounds like:
armold, arnalda, arnaldo, arnault, arnhold, arnholt, arnoldi, arnoldy, aronhalt