Or search: bam, din, hum, bang, bark, boom, chug, clap, hiss, honk, howl, pant, plop, roar, slam
2 Syllables: SU
boyish, choices, coinage, joyless, loyalist, noiseless, royalist, voices
3 Syllables: USU
rejoices, rejoicings

Found 10 words across 2 groupings. Skipped 2 excess words of a similar stem.