Gnats rhymes with:
nats, at-bats, atz, bats, batts, batz, blatz, brats, bratz, cat's, cats, chats, chatz, chatz', combats, dats, datz, fats, flats, gatz, glatz, gratz, 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
Gnats sounds like:
gamunde's, gandhi's, gannett's, gantos, gantz, genentech, genentech's, genetic, genetics, gent's, gentz, giaconda's, giannattasio, giant's, giants, giants', gigantic, gintz, gonads, gondek, guandjo, guandjo's, gundog, gwyneth's, gwyneths