1 Syllable: S
aus, boughs, bound, bout, bowed, bows, browns, brows, browse, cloud, clout, clowns, cowed, cows, crowd, crowned, crowns, doubt, downs, drought, drowned, found, frowned, frowns, gout, gowns, ground, hound, housed, How's, loud, lounge, mound, mouth, nouns, out, ploughed, ploughs, plowed, plows, pound, proud, round, rouse, rout, route, scout, shout, shroud, snout, sound, South, sowed, spout, sprout, stout, tout, towns, trout, vowed, vows, wound
2 Syllables: SU
2 Syllables: US
abound, about, aground, allowed, allows, aloud, around, arouse, avowed, confound, devout, endowed, endows, espouse, expound, Macleod, profound, propound, rebound, redoubt, redound, renowned, resound, surround, throughout, unbound, unsound, without
3 Syllables: UUS
Found 94 words across 4 groupings. Skipped 34 excess words of a similar stem.