2 Syllables: SU
blunder, bumper, bunker, comer, comfort, drummer, drunkard, dunkirk, gunner, humbler, hundred, hunger, hunter, juncture, lumber, mongers, munster, number, plumber, plunder, puncture, runner, slumber, somers, summer, sumner, sunburnt, sundered, thunder, tumbler, wonder, younger, youngster
3 Syllables: USU
4 Syllables: UUSU
Found 42 words across 3 groupings. Skipped 28 excess words of a similar stem.