Or search: tiro, tyro, lubber, novice, denizen, dweller, landman, beginner, initiate, landsman, habitant, indweller, inhabitant
2 Syllables: SU
Chancellor
3 Syllables: SUU
amateur, angular, annular, Brandenburg, Chancellors, glandular, grandmother, granular, hamburger, handsomer, janitor, Lancaster
4 Syllables: USUU
diameter, parameter, quadrangular, rectangular, triangular

Found 18 words across 3 groupings. Skipped 6 excess words of a similar stem.