Dumpy rhymes with:
bumpy, clumpy, frumpy, grumpy, jumpy, lumpy, bumpy, campi, campy, ciampi, clumpy, empey, empie, frumpy, grumpy, jumpy, lampi, lumpy, pompey, rampey, rampy, sampey, skimpy, stimpy, swampy, tempe, wimpee, wimpy
Dumpy sounds like:
damp, danby, danube, danvy, demby, demov, denbo, denbow, denby, deneuve, deneve, dinovo, dumb, dumbo, dump, dunfee, dunphy