Graffius rhymes with:
agius, ambrosius, beckius, blasius, brixius, brosius, cornelious, crecelius, dinius, flavius, gurganious, iglesias, junius, lanius, launius, lenius, melius, milius, moebius, nevius, pastorius, pocius, pontius, porteous, redenius, sartorius, silvius, tertius, tullius
Graffius sounds like:
garbacz, garbage, garp's, garps, gearbox, gearboxes, geographic, geographic's, gerbasi, gerbig, gervais, gervase, gervasi, gervasio, giraffes, graboski, grabowski, grabs, grabski, grapage, grapes, graphic, graphics, graphics', graphs, graves, graves's, gravies, gravois, grbavica, greaves, grieves, grievous, griffey's, griffis, gripes, grips, grivas, grooves, groppy's, group's, groupies, groups, groups', grove's, groves, grubaugh, grubbs, grubs, gurevich