Giannattasio rhymes with:
agnosio, alessio, aloisio, ambrosio, anastasio, aparicio, arceo, asencio, atencio, attanasio, bonifacio, cancio, cascio, casio, cicio, collosio, colosio, cosio, dalesio, dalessio, daloisio, dambrosio, deblasio, delisio, desio, dibiasio, diblasio, dimascio, dionisio, distasio, fabrizio, fulgencio, gervasio, guercio, gumucio, horacio, ignacio, licio, locascio, lucio, mascio, mauricio, nuncio, ocasio, officio, ortomisio, palacio, patricio, piasio, pourciau, provencio, socio, sparacio, stasio, vescio, vicencio, villavicencio, vinicio
Giannattasio sounds like:
gamunde's, gandhi's, gannett's, gantos, gantz, genentech, genentech's, genetic, genetics, gent's, gentz, giaconda's, giant's, giants, giants', gigantic, gintz, gnats, gonads, gondek, guandjo, guandjo's, gundog, gwyneth's, gwyneths