2 Syllables: SU
blushes, Burgess, circuits, circus, clutches, courteous, Curtis, Duchess, earliest, Ernest, firmest, firmness, furnace, furthest, hermits, justice, Justus, kerchief, loveliest, lustrous, nervous, Perseus, purchase, purpose, roughest, roughness, rushes, Russia's, service, spurious, sternest, sternness, surface, surplus, touches, toughest, toughness, turnips, ugliest, versus, worships, worthiest, worthless
3 Syllables: SUU
3 Syllables: USU
4 Syllables: UUSU
Found 53 words across 4 groupings. Skipped 1 excess word of a similar stem.