1 Syllable: S
air, Ayres, Baird, bare, bear, Berg, Bern, Berne, Bert, berth, birch, bird, birth, Blair, blur, blurred, bur, burg, burgh, Burke, Burke's, burn, burnt, Burr, burst, Burt, Cairns, care, chair, cher, church, churn, Clair, Claire, Clare, clerk, cur, curb, curl, current, curs, curse, curt, curve, dare, dearth, der, dirge, dirt, durch, durst, Earl, Earle, Earls, earn, earth, er, ere, Ernst, err, ers, erst, Eyre, fair, faire, fairs, fare, fer, fern, fir, firm, firs, first, Firth, flair, flare, fleur, flirt, for, freer, fur, furred, furs, Ger, germ, gird, girl, girt, girth, glare, guerre, hair, hare, heard, hearse, heir, her, herb, herd, Herr, hers, Hirsch, hurl, Hurst, hurt, jerk, jours, Ker, Kern, Kerr, Kirk, Kurt, lair, learn, learnt, lettre, lurch, lurk, mare, merge, mirth, myrrh, nerve, nurse, oeuvre, pair, pare, pear, pearl, pears, per, perch, Pere, pers, pert, Perth, prayer, pur, purge, purse, quern, rare, scarce, scare, scourge, search, serf, serge, serv, serve, share, shirk, shirt, Sir, skirt, slur, snare, spare, sperm, spur, spurn, spurred, spurs, spurt, square, stair, stare, stern, Sterne, stir, stirred, stirs, sur, sure, surf, surge, swear, swerve, swirl, tare, tear, ter, term, tern, terre, terse, their, there, there's, third, thirst, tors, turf, Turk, turn, urge, urn, ver, verb, verge, vers, verse, vert, ware, wear, were, wert, where, Where's, whirl, word, work, world, worm, worse, worst, wort, worth, yearn, yer, yours
2 Syllables: SU
adverse, chauffeur, concert, converse, convert, desert, emerge, excerpt, insert, overt, pervert, research, Sinclair, transfer, transferred, transfers, traverse
2 Syllables: US
absurd, adjourn, affair, affaire, affairs, affirm, alert, amours, assert, astern, astir, averred, averse, avert, aware, beware, coerce, compare, concern, concur, concurred, concurs, confer, conferred, confers, confirm, conserve, converge, conversed, declare, defer, deferred, demur, demurred, deserve, despair, dessert, deter, deterred, disbursed, discern, discoursed, disperse, disturb, diverge, diverse, divert, downstairs, exert, forbear, immerse, impair, incur, incurred, incurs, inert, infer, inferred, infers, infirm, inter, interred, inverse, invert, manoeuvres, Messieurs, moderne, Moliere, Monsieur, observe, obverse, occur, occurred, occurs, perturbed, perverse, Pierre, prefer, preferred, prefers, prepare, preserve, reaffirm, reassert, rebirth, recherche, recur, recurred, recurs, refer, referred, refers, rehearse, repair, researched, reserve, return, reverse, revert, seigneur, sojourned, submerged, subserve, subvert, superb, transverse, twothirds, unearned, unearthed, unfair, unfurled, unheard, unhurt, unnerved, upstairs, upturned, usurp, vespers, Voltaire, Wentworth
3 Syllables: SUU
3 Syllables: UUS
connoisseur, doctrinaire, interspersed, millionaire, overheard, overseer, overwork, privateer, questionnaire, reimburse, unaware, unconcern, undeserved, undisturbed, unimpaired, unobserved, unprepared, unreserved
4 Syllables: UUUS
Found 381 words across 6 groupings. Skipped 187 excess words of a similar stem.