2 Syllables: SU
brightened, brightens, Byron's, China's, cited, diamond, frightened, frightens, guided, guises, heightened, heightens, Highland, hybrid, Iceland, ices, island, items, lichens, lighted, lightened, likened, lions, Lyons, mileage, pirate, prices, prizes, ripened, ripens, rises, sided, sighted, Simon's, sirens, sizes, slices, spices, stipend, tightened, Titans, viands, vices, widened, widens
3 Syllables: USU
advices, asylums, comprises, delighted, devices, enlightened, enlivened, environed, environs, excited, Goliath, horizons, invited, presided, provided, recited, United
4 Syllables: UUSU
Found 66 words across 3 groupings. Skipped 5 excess words of a similar stem.