2 Syllables: SU
almond, Arden, ardent, arson, Aryan, Austrian, bargain, Barton, carbon, Carleton, Carlton, Carmen, Carson, Charleston, Charlton, Clarkson, common, Compton, conference, conscience, Constance, constant, convent, darken, garden, garland, garment, guardian, harden, Harlem, Hartmann, hearken, jargon, Johnson, Johnson's, Johnston, Jonson, Longman, margin, Marian, Markham, Marston, Martin, Martin's, omnium, parchment, pardon, parlance, parson, quantum, Sargent, sergeant, Serjeant, sharpen, Spartan, Taunton, Thompson, Thompson's, Thomson, Thomson's, wanton
3 Syllables: USU
apartment, bombardment, compartment, department, despondent, disheartened, enlargement, inconstant, preponderance, remonstrance, respondent, uncommon, Wisconsin
4 Syllables: UUSU
Found 77 words across 3 groupings. Skipped 29 excess words of a similar stem.