Or search: vale, wadi
2 Syllables: SU
bulky, dully, gully, hurries, moneys, monies, multi, mummies, Murray's, puppies, studies, sulky, sullied, Sully, sultry, worries
3 Syllables: USU
unsullied

Found 17 words across 2 groupings. Skipped 1 excess word of a similar stem.