2 Syllables: SU
3d, beastly, breezy, briefly, cheaply, chiefly, cleanly, creamy, deeply, dreamy, easy, fealty, feebly, fleecy, freely, genie, greasy, greedy, Greeley, keenly, leafy, leaky, leges, levy, meanly, meekly, neatly, needy, Nietzsche, Priestley, priestly, really, seaweed, seemly, sleepy, specie, speedy, steeply, sweetly, sweetmeats, theses, treaties, treaty, weakly, weekly, XLVIII
3 Syllables: USU
Assisi, completely, discreetly, entreaties, entreaty, extremely, ideally, Luigi, Martini, Medici, naively, obliquely, Principe, routinely, serenely, uneasy, uniquely, unmeaning, unseemly, unwieldy
4 Syllables: UUSU
Found 70 words across 3 groupings. Skipped 1 excess word of a similar stem.