Op's rhymes with:
chops, copps, cops, crop's, crops, drops, flops, hoppes, hopps, hops, koppes, kops, moppes, mops, nonstops, ops, pop's, pops, propps, props, rops, shop's, shoppes, shops, sops, stops, swaps, topps, tops, wops
Op's sounds like:
obese, obeys, obsequious, obsess, obsesses, obuchowski, obvious, ofc, off's, office, office's, offices, officio, offs, ohbayashi, oops, opaque, opax, opec, opec's, opic, opic's, oppose, opposes, ops, opus, ovex