2 Syllables: SU
brightened, cited, climate, diamond, diet, frightened, guided, heightened, Highland, hybrid, Iceland, Isaac, island, lighted, lightened, likened, minded, Pilate, pilot, private, quiet, riot, ripened, sided, sighted, stipend, tightened, viands, violets, widened, Wyatt
3 Syllables: USU
delighted, disquiet, enlightened, enlivened, environed, excited, invited, presided, provided, recited, reminded, United
4 Syllables: UUSU
Found 46 words across 3 groupings. Skipped 8 excess words of a similar stem.