Arnaldo rhymes with:
donaldo, naldo, reinaldo, renaldo, reynaldo, rinaldo, aldo, ansaldo, baldo, capaldo, castaldo, cataldo, donaldo, faldo, geraldo, giraldo, grimaldo, naldo, reinaldo, renaldo, reynaldo, rinaldo, waldo
Arnaldo sounds like:
armold, arnalda, arnault, arnhold, arnholt, arnold, arnoldi, arnoldy, aronhalt