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, piecemeal, Priestley, priestly, really, seaweed, seemly, sleepy, specie, speedy, steeply, sweetly, sweetmeats, theory, theses, treaties, treaty, weakly, weekly, XLVIII
3 Syllables: SUU
cheerily, deity, dreamily, easily, equally, gleefully, greedily, grievously, legally, needlessly, peaceably, peacefully, plenary, scenery, secrecy, speedily, tyranny, zealously
3 Syllables: USU
Assisi, completely, discreetly, entreaties, entreaty, extremely, ideally, Luigi, machinery, Martini, Medici, naively, obliquely, Principe, routinely, uneasy, uniquely, unmeaning, unseemly, unwieldy
3 Syllables: UUS
4 Syllables: USUU
appreciably, conceivably, conspiracy, illegally, obesity, supremely, uneasily, unequally, unspeakably
4 Syllables: UUSU
4 Syllables: UUUS
5 Syllables: UUSUU
5 Syllables: UUUUS
6 Syllables: UUUUUS
Found 106 words across 10 groupings. Skipped 1 excess word of a similar stem.