2 Syllables: SU
7, aaron, baron, barren, beckon, bedlam, bellum, benson, bentham, benton, brethren, breton, cession, clarence, clemens, clement, crescent, currant, deaden, deference, devon, edwin, ellen, emblem, engine, ensign, entrance, errand, errant, essen, essence, evan, felon, fenton, freshened, harem, heaven, helen, heron, hessian, jenkins, jensen, karen, kenyon, leaden, leaven, leben, legend, lemon, lengthen, lenin, lessen, lesson, melon, mention, parent, peasant, pelham, penance, penchant, pendant, pendent, penguin, pennant, pension, pheasant, pleasant, plenum, preference, presence, present, pression, preston, question, reckon, reddened, reference, remnant, resin, reverend, second, semblance, sentence, sentient, session, seven, sharon, stephens, strengthen, temperance, tenant, tendon, tension, terence, threaten, trenchant, trenton, vellum, vengeance, venom, veteran, weapon, weren, weston
3 Syllables: SUU
3 Syllables: USU
aberrant, abstention, accession, aggression, amendment, apparent, ascendant, ascension, assessment, attendance, attendant, attention, commencement, compendium, compression, concession, confession, contention, contentment, contestants, convention, declension, defendant, dependant, dependence, dependent, depression, descendant, detention, digression, dimension, discretion, dissension, entrenchments, exemption, expression, extension, fluorescent, forbearance, impression, incessant, inherent, intention, intestine, invention, investment, lieutenant, magellan, millennium, momentum, obsession, oppression, possession, predestined, presentment, pretension, prevention, procession, profession, progression, quiescence, quiescent, quintessence, recession, redemption, regression, remembrance, repellent, repentance, repentant, repression, resemblance, resentment, resplendent, retention, retrenchment, secession, succession, suppression, suspension, transcendence, transcendent, transgression, transparent, unpleasant
4 Syllables: UUSU
acquiescence, adolescence, adolescent, apprehension, cerebellum, comprehension, condescension, contravention, convalescence, convalescent, effervescence, evanescent, hypertension, inattention, incandescent, independence, independent, indiscretion, intercession, intervention, iridescent, mahometan, obsolescence, omnipresence, omnipresent, phosphorescent, prepossessions, referendum, retrogression
5 Syllables: UUUSU
Found 226 words across 5 groupings. Skipped 90 excess words of a similar stem.