2 Syllables: SU
absence, absent, acting, action, Acton, Adam, adding, adjunct, Alan, Allan, Allen, Allen's, alum, Ammon, annum, arrant, ashen, asking, aspen, aspirin, Aston, Athens, Atkins, atom, axiom, babbling, backing, baffling, balance, banning, Baron, barren, basking, baton, battling, blacken, blackening, blasting, bracken, bragging, cabin, cadmium, Canning, cannon, canon, Captain, caption, Caspian, casting, catching, challenge, Channing, chaplain, Chapman, chasm, Chatham, chatting, clapping, clashing, clasping, cracking, crackling, cramming, crashing, damning, dashing, datum, dragging, dragon, faction, famine, fanning, fashion, fasten, fastening, fastens, fasting, fathom, fatten, fattening, flagging, flapping, flashing, flatten, flattening, flaxen, fraction, fragment, gallant, gallon, gasping, Gaston, gladden, grabbing, granting, grappling, grasping, hacking, Hadrian, Hallam, Hammond, happen, happening, happens, hatching, Hatton, having, Jackson, Jackson's, javelin, Kaplan, lacking, lagging, lapping, lashing, lasting, Latham, Latin, laughing, Madam, Madame, Madden, maddening, madmen, magnum, Mammon, Manning, mapping, masking, massing, Masson, matching, matin, mation, matting, maxim, nagging, napkin, packing, padding, paddling, pageant, passing, passion, patching, patent, patting, Patton, phantom, planning, platinum, racking, rapine, rasping, ration, rattling, sacking, saddened, saffron, sagging, salmon, sapling, satin, savants, Saxon, scanning, scratching, Shannon, Sharon, slacken, slamming, slapping, slashing, smashing, snapping, snatching, spanning, spasm, splashing, stabbing, staffing, stagnant, Staten, straggling, strapping, Stratton, stratum, tacking, tackling, talent, talons, tanning, tapping, taxing, thrashing, tracking, traction, trapping, traveling, travelling, wagging, waggon, wagon, waxen, waxing, wrapping
3 Syllables: USU
abstracting, abstraction, adapting, amassing, assassin, attaching, attacking, attracting, attraction, Buchanan, collapsing, combatant, combating, compassion, contraction, contrasting, despatching, detaching, detraction, diffraction, dispatching, distracting, distraction, enacting, enactment, enchanting, exacting, exaction, examine, extracting, extraction, harassing, harassment, imagine, imbalance, impassioned, inaction, infraction, Manhattan, misshapen, oldfashioned, reacting, reaction, refraction, relapsing, relaxing, retraction, subtracting, subtraction, surpassing, transacting, transaction, unbalanced, unchallenged, unflagging, unravelling
4 Syllables: UUSU
AngloSaxon, benefactions, counteracting, counterbalanced, everlasting, interacting, interaction, putrefaction, satisfaction
5 Syllables: UUUSU
Found 272 words across 4 groupings. Skipped 70 excess words of a similar stem.