Napping rhymes with:
snapping, capping, clapping, flapping, lapping, mapping, rapping, recapping, sapping, scrapping, slapping, snapping, strapping, tapping, trapping, unwrapping, wrapping, zapping
Napping sounds like:
nabbing, nevin's, nevins, nifong, nipping, nivens, nonbank, nonpaying, nonwovens, numbing, numbness, nupeng, nvhomes, nymphomaniac, nymphomaniacs