1 Syllable: S
1, an, ance, blunt, brunt, bum, bump, bums, bun, bunch, Bund, bunk, Chron, chum, chunk, clump, clung, come, Conf, cont, crumb, cum, done, Donne, drum, drunk, dum, dumb, dump, dung, Dunn, Duns, flung, from, front, fun, funds, Funk, grunt, gum, gun, HM, hum, hummed, hump, hun, hunch, hung, Huns, hunt, Ian, jump, Jun, junk, leant, lump, lunch, Lund, lung, ment, monk, month, mum, none, numb, nun, once, one, plum, plumb, plump, plums, plunge, pump, pun, punch, puns, rum, rump, run, rung, runs, scum, shrunk, shun, shunned, sions, slum, slump, slums, slung, slunk, some, son, sponge, sprung, spun, strung, stump, stung, stunned, stunt, sum, summed, sums, sun, sung, sunk, suns, swung, than, thumb, thump, ton, tongue, tons, trump, trunk, tum, tun, tung, um, un, won, wrung, young, Young's
2 Syllables: SU
2 Syllables: US
affront, Amiens, among, amongst, become, begun, benumbed, Bodleian, confront, Crimean, defunct, expunged, Korean, Lyceum, outdone, outrun, plebeian, succumb, therefrom, undone
3 Syllables: SUU
3 Syllables: UUS
4 Syllables: UUUS
Found 159 words across 6 groupings. Skipped 50 excess words of a similar stem.