Or search: bum, crumb, puke, rat, rotter, skunk, stinker
1 Syllable: S
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: UUS
4 Syllables: UUUS

Found 261 words across 6 groupings. Skipped 82 excess words of a similar stem.