Numbing rhymes with:
becoming, coming, cumming, drumming, dumbing, forthcoming, humming, plumbing, strumming, succumbing, summing, thumbing, unbecoming
Numbing sounds like:
nabbing, napping, nevin's, nevins, nifong, nipping, nivens, nonbank, nonpaying, nonwovens, numbness, nupeng, nvhomes, nymphomaniac, nymphomaniacs