2 Syllables: SU
bearer, Becker, Bedford, beggar, better, cellar, center, checkered, chequered, Cheshire, Chester, clever, debtor, Decker, desert, Dexter, dresser, dweller, Edgar, Edward, effort, enter, error, Esther, ever, excerpt, expert, fairer, feather, feller, fetter, Fletcher, fresher, gether, guesswork, heather, Hector, heifer, Heller, Hester, jester, Keller, Kepler, leather, leathern, lecture, ledger, Leicester, leisure, Leonard, leopard, leper, lesser, Lester, letter, lever, measure, Messrs, nectar, Nestor, nether, network, never, peddlers, pepper, pestered, pleasure, pressure, rarer, readier, record, rector, redder, sceptre, sector, seller, setter, settler, sever, Severn, sharer, Shepard, shepherd, Sheppard, specter, spectre, steadier, stellar, stretcher, sweater, teller, tenor, terror, tester, tether, texture, treasure, tremor, Trevor, vector, wearer, weather, Weber, Webster, Webster's, Western, westward, whether, zephyr
3 Syllables: USU
abettors, aggressor, assessor, collector, confessor, conjecture, detector, director, displeasure, dissenters, elector, endeavor, endeavour, forever, however, inspector, investor, midwestern, Northwestern, objector, oppressor, possessor, preceptor, Professor, projector, propeller, protector, reflector, semester, sequestered, soever, southwestern, successor, Sylvester, together, transgressors, unfettered, unlettered, unmeasured, whatever, whenever, wherever, whichever, whoever
4 Syllables: UUSU
5 Syllables: UUUSU
Nebuchadnezzar, whithersoever
Found 161 words across 4 groupings. Skipped 76 excess words of a similar stem.