Or search: pariah, castaway, misbeliever, nonconformist
2 Syllables: SU
desperate, Frederick, separate
3 Syllables: SUU
Arabic, Benedict, benefit, derelict, Federalists, feminist, Methodist, rhetoric, separates, specialist, terrorist, therapist
4 Syllables: USUU
inherited, unprejudiced
5 Syllables: UUSUU
disinherited

Found 18 words across 4 groupings. Skipped 3 excess words of a similar stem.