Nonpaying rhymes with:
paying, prepaying, repaying, allaying, arraying, baying, betraying, buffeting, conveying, crocheting, decaying, delaying, dismaying, disobeying, displaying, doomsaying, fraying, graying, greying, haying, heying, laying, obeying, overplaying, paying, playing, portraying, praying, prepaying, preying, purveying, repaying, replaying, saying, slaying, spraying, staying, straying, surveying, swaying, weighing
Nonpaying sounds like:
nabbing, napping, nevin's, nevins, nifong, nipping, nivens, nonbank, nonwovens, numbing, numbness, nupeng, nvhomes, nymphomaniac, nymphomaniacs