2 Syllables: SU
Ceres, cheerfully, cheery, cleanly, clearly, dearly, decrease, dreary, eerie, Erie, fiercely, fieri, iri, keenly, meanly, merely, nearly, Petri, queried, queries, query, seemly, series, Siegfried, theories, theory, wearied, weary, wiry, yearly
3 Syllables: SUU
cheerily, deity, dreamily, eagerly, easily, easterly, equally, gleefully, greedily, grievously, legally, leisurely, needlessly, peaceably, plenary, scenery, secrecy, speedily, tyranny, zealously
3 Syllables: USU
3 Syllables: UUS
4 Syllables: USUU
appreciably, conceivably, conspiracy, illegally, obesity, supremely, uneasily, unequally, unspeakably
4 Syllables: UUUS
5 Syllables: UUSUU
5 Syllables: UUUUS
6 Syllables: UUUUUS
Found 73 words across 9 groupings. Skipped 1 excess word of a similar stem.