Or search: ado, din, fuss, stir, bustle, flurry, hustle, tumult, rumpus, ruction, commotion, disturbance
2 Syllables: SU
bloodless, buckets, buttocks, buttress, couplets, Douglas, Duchess, dullest, justice, Justus, luckless, luggage, lustrous, muskets, oneness, pumice, puppets, roughest, stirrups, stomachs, toughest, troublous, turrets, ugliest
3 Syllables: USU
abruptness, Augustus, deductive, rivulets

Found 28 words across 2 groupings. Skipped 2 excess words of a similar stem.