2 Syllables: SU
blunder, blunted, bluster, brother, buckler, buffer, bumper, bunches, Bunker, Butler, Butler's, butter, cluster, cluttered, color, colour, comer, comfort, cover, cupboard, custard, Cutler, cutter, drummer, drunkard, duller, Dundas, dungeons, Dunkirk, flutter, functioned, functions, funded, Glover, govern, gunner, gutter, hover, Hubbard, humbler, humbug, hundred, hunger, hunted, hunter, Hussars, jugglers, junctions, juncture, juster, London's, lover, lumber, luster, lustre, mongers, mother, Muller, Munster, mustard, muster, mutter, number, onions, other, plumber, plunder, pumpkins, puncture, rather, rougher, rubber, rudder, runner, shudder, shutter, slumber, smother, smugglers, someone's, Somers, southern, stomach, stubborn, subtler, suburb, succor, succour, sucker, suffer, summer, summit, Sumner, sunburnt, sundered, supper, thunder, tougher, trumpet, Tucker, tumbler, under, upper, upward, usher, utter, wonder, younger, youngster
3 Syllables: USU
another, another's, assumptions, asunder, columnar, confronted, conjunctions, conjuncture, discolored, discoloured, discomfort, discover, encumber, injunctions, midsummer, outnumber, presumptions, recover, uncover, unnumbered
4 Syllables: UUSU
Found 132 words across 3 groupings. Skipped 76 excess words of a similar stem.