Or search: gag, rag, rub, vex, flap, fray, fuss, gall, rile, rust, stew, wash, nark, adorn, annoy
1 Syllable: S
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: UUS

Found 278 words across 5 groupings. Skipped 91 excess words of a similar stem.