1 Syllable: S
acts, aft, as, ash, ask, asp, ass, ast, auch, ax, axe, backs, badge, bask, basque, bass, bast, batch, bath, bats, blacks, blast, blocks, blots, bos, box, brass, broth, cache, calf, caps, cars, cas, cash, cask, cass, cast, caste, casts, catch, cats, cause, chaff, chaps, chas, chops, clash, clasp, class, claus, clause, claws, clocks, cloth, cocks, cops, copse, cos, cost, cough, cox, cracks, craft, crash, crass, croft, crops, cross, das, dash, docks, docs, dodge, dos, dost, doth, dots, draft, draught, draws, drops, dross, facts, fast, fats, fax, flaps, flash, flask, flats, flaws, flax, flocks, fox, frocks, frost, froth, gaps, gas, gash, gasp, gauze, glass, gloss, gnats, goths, gough, graf, graft, graph, grasp, grass, grosse, half, halved, halves, haps, has, hash, hast, hatch, hath, hats, have, hawks, hodge, hops, jacks, jas, jaws, jazz, katz, knocks, knopf, knots, knox, koch, lacks, laps, lapse, las, lash, lass, last, latch, lath, laugh, laws, lax, locks, lodge, loft, los, lost, loth, lots, maj, maps, mas, mash, mask, masque, mass, masse, mast, match, math, mats, mav, max, mocks, mos, mosque, moss, moth, mots, nash, notch, nots, off, oft, ox, oz, packs, pas, passed, past, patch, path, pause, paws, pax, plaques, plots, pots, pox, prof, props, quacks, racks, raft, raj, ras, rash, rats, rocks, ross, roth, sachs, sacks, sacs, salve, sash, sauce, saws, saxe, scoff, scotch, scots, scott's, scraps, scratch, shaft, shaw's, shocks, shops, shots, slash, slav, slots, smacks, smash, snaps, snatch, socks, soft, splash, spots, squash, stacks, staff, stalks, stocks, stops, straps, straws, suave, swathed, tacks, taft, talks, taps, task, tax, thatch, that's, thoughts, thrash, tops, toss, tracks, tracts, traps, trash, troth, trough, vas, vase, vast, vats, vos, vox, waft, walks, was, wash, wasp, wast, watch, watts, wax, wraps, wrath, wroth, yachts
2 Syllables: SU
2 Syllables: US
abashed, across, adapts, adopts, aghast, alas, aloft, alsace, amass, applause, approx, attach, attacks, attracts, barrage, because, behalf, collapse, combats, debauch, despatch, despots, detached, detracts, dislodge, dispatch, ducats, elapse, embossed, enacts, exacts, exhaust, garage, harass, imposts, massage, mirage, perhaps, reacts, recast, recrossed, relapse, relax, repast, surpass, unmasked, unmatched, unwashed, whereas, withdraws
3 Syllables: UUS
Found 350 words across 4 groupings. Skipped 95 excess words of a similar stem.