Silvia rhymes with:
sylvia, sylvia, zilvia, belvia, elvia, fulvia, salvia, sylvia, zilvia, avia, batavia, bellavia, belvia, bolivia, bonavia, covia, davia, elvia, favia, flavia, fulvia, govea, hevia, jarvia, latvia, livia, moldavia, monrovia, novia, octavia, olivia, pavia, salvia, saravia, scandinavia, segovia, sylvia, tovia, trivia, valdivia, wachovia, yugoslavia, zilvia
Silvia sounds like:
salafia, saleeby, saliba, salif, saliva, salva, salve, salvi, salvia, salvo, scalf, scallop, scalp, schleif, schlepp, schliep, schlup, schoolboy, schulhauf, schulhof, schulof, schwalb, schwalbe, scialabba, seawolf, selbe, selby, self, selloff, selph, selva, selvey, shelby, shelev, shelf, shelp, shelve, sielaff, sieloff, sigoloff, silva, silvey, silvi, silvie, silvio, sizelove, slab, slaby, slap, slape, slaphappy, slappey, slav, slava, slave, sleep, sleepy, sleeve, slife, slip, sliva, slob, sloop, slop, slope, sloppy, slovo, sokoloff, sokolov, soloff, soloviev, solvay, solve, sulfa, sylph, sylva, sylvia, sylvie, sylvio