2 Syllables: SU
Ahmed, almond, aren, Auckland, auction, audience, Austin, autumn, awesome, blossom, blotted, Boston, bottom, Brabant, broaden, caution, clotted, Cochrane, column, common, cotton, Dawson, Dobson, doctrine, dotted, Falkland, fallen, foreign, frosted, gotten, Hobson, Holland, Houghton, Lawson, nodded, Nostrand, nostrum, often, Ogden, option, oxen, plotted, pollen, problem, province, quadrant, Robin, rostrum, rotten, Scotchman, Scotland, Scotsman, shotgun, sodden, Sodom, soften, solemn, solid, sovereign, spotted, squadron, squalid, Stalin, Stockton, stolid, trodden, trotted, Watson, Watson's
3 Syllables: USU
accosted, adoption, allotment, befallen, concoction, downtrodden, forgotten, precaution, uncommon, untrodden
Found 79 words across 2 groupings. Skipped 21 excess words of a similar stem.