Semigloss rhymes with:
blas, clos, floss, klaas, klos, las, aase, abbas, alsace, blas, bos, boss, bosse, clos, crosse, daas, dazs, demoss, devoss, floss, foss, fosse, gosse, grosse, haas, haase, haass, hahs, hamas, hamas', hammas, hammas', hasse, hoss, kjos, klaas, klos, kos, lacoss, lafosse, las, maass, mohs, os, pos, ross, ross', rosse, tomas, vanoss, vohs, vos, vyas
Semigloss sounds like:
samojlik, senegalese, senseless, shankles, shingles, singles, siniscalchi, smigelski, smigielski, smokeless, snackwell's, snackwells, snakelike, sunglass, sunglasses