Or search: weld, stowe, tappan, tubman, beecher, crusader, douglass, garrison, reformer, reformist, emancipationist
2 Syllables: SU
Nicholas
3 Syllables: SUU
bitterest, differences, distances, frivolous, limitless, literate, rigorous, silicate, Spiritus, syllabus, timorous, vigorous, villainous
3 Syllables: USU
deliberate
4 Syllables: USUU
antithesis, carnivorous, considerate, felicitous, illiterate, indigenous, legitimate, solicitous, vociferous
5 Syllables: UUSUU
abolitionists, indiscriminate

Found 26 words across 5 groupings.