Or search: gap, gob, gum, jar, jaw, lip, nib, yap, neb, bark, beak, gulp, hiss, peep, rant
1 Syllable: S
2 Syllables: SU
2 Syllables: US
3 Syllables: UUS

Found 78 words across 4 groupings. Skipped 26 excess words of a similar stem.