2 Syllables: SU
Burgess, Church's, circuits, circus, courteous, Curtis, earliest, Ernest, firmest, firmness, furnace, furthest, hermits, kerchief, nervous, nurses, Perseus, purchase, purpose, service, spurious, sternest, sternness, surface, surges, surplus, turnips, urges, versus, worships, worthiest, worthless
3 Syllables: USU
alertness, encourage, illustrious, impervious, industrious, interprets, luxurious, reverses, traverses
4 Syllables: UUSU
Found 42 words across 3 groupings. Skipped 3 excess words of a similar stem.