Or search: ugly, slimy, queasy, noisome, nauseous, unworthy, wretched, loathsome, offensive, sickening, worthless, despicable, nauseating, unwholesome
2 Syllables: SU
defect, effects, licet, precept, prefect, pretext, recess, redress, reflex, regress, reject, reset
3 Syllables: USU
Martinez, Rodriguez

Found 14 words across 2 groupings. Skipped 4 excess words of a similar stem.