Or search: birder, mortal, unpaid, someone, dabbler, hobbyist, somebody, sciolist, unskilled, dilettante, recreational, unprofessional, nonprofessional
2 Syllables: SU
bachelor, bachelor's, traveler
3 Syllables: SUU
amateurs, caliber, flatterer, gatherer, grandmother, janitor, Lancaster, Latimer, manager, massacre, traveller, vascular
4 Syllables: USUU
ambassador, coadjutor, diameter, examiner, parameter
6 Syllables: UUUSUU
cardiovascular

Found 21 words across 4 groupings. Skipped 13 excess words of a similar stem.