Gratz rhymes with:
brats, bratz, kratz, prats, pratt's, rat's, rats, ratts, ratz, at-bats, atz, bats, batts, batz, blatz, brats, bratz, cat's, cats, chats, chatz, chatz', combats, dats, datz, fats, flats, gatz, glatz, gnats, hat's, hats, hatz, kats, katz, kratz, labatt's, latz, mats, mattes, matts, matz, nats, oshatz, pat's, pats, patz, platts, platz, prats, pratt's, rat's, rats, ratts, ratz, satz, schatz, shatz, slats, spats, spatz, stats, statz, that's, vats
Gratz sounds like:
garret's, garrets, garrett's, gartzke, garuda's, geerdes, geerts, gerdes, gerdes', gerdts, gerrits, gertsch, gertz, geurts, gewirtz, girds, goertz, goradze, gordji, gordy's, gorrids, gourds, gradco, grades, grads, graduates, gradus, graetz, grates, gratis, gratuities, gratuitous, great's, greathouse, greats, greets, greitz, greta's, gretz, gretzky, grid's, grids, grites, grits, gritz, grodsky, grotesque, grothaus, grotz, growth's, growths, grudge, grudges, guard's, guards, gurtz, gyrates