Dumb rhymes with:
dum, dumm, ancrum, baucum, become, bluhm, boyum, brum, brumm, bum, chum, clum, come, crum, crumb, crumm, cum, drum, drumm, dum, dumm, exum, from, frum, glum, grum, gum, gumm, hmmm, hohum, hum, humm, klumb, krum, krumm, krumme, kumm, lum, lumb, lumm, maam, mccrum, mccrumb, mum, mumm, mumme, narum, numb, pflum, plum, plumb, rum, schrum, schum, schumm, scum, sharum, shrum, shum, slum, some, strum, stum, stumm, succumb, sum, swum, thum, thumb, thumm, um, umm, yum
Dumb sounds like:
damp, danby, danube, danvy, demby, demov, denbo, denbow, denby, deneuve, deneve, dinovo, dumbo, dump, dumpy, dunfee, dunphy