Or search: dix, huss, owen, rebel, hippy, hippie, wilkes, libber, hipster, utopian, eristic, activist, chartist, crusader, feminist
2 Syllables: SU
Boris, brokerage, coarsest, Coleridge, cornice, Cornish, corpses, courses, courtship, Doris, Dorset, forage, forces, forest, forfeit, forges, formless, Georges, gorges, Horace, horses, lordship, Morris, mortgage, mortis, Norris, Norwich, orbis, porches, portage, shortage, shortest, sportive, storage, torches, warship, Warwick
3 Syllables: SUU
discourses
3 Syllables: USU
abortive, divorces, enforces, enormous, McCormick, supportive
4 Syllables: UUSU
Nonconformist, reinforces
5 Syllables: UUUSU
anthropomorphic

Found 47 words across 5 groupings. Skipped 5 excess words of a similar stem.