2 Syllables: SU
barest, barracks, benches, blemish, carrots, census, checklist, chemist, cherish, chestnuts, clerics, credits, crevice, Denis, Dennis, dentist, devilish, Ellis, endless, envious, epics, epochs, Essex, ethics, fairest, fences, ferrous, fetish, Flemish, freshest, friendless, garish, Greenwich, Harris, headless, heiress, hellish, hemorrhage, jealous, Kenneth, Kentish, Lennox, Lenox, lenses, lettuce, Memphis, menace, merest, merits, necklace, Paris, parish, parrots, pellets, pensive, perish, plenteous, precious, PREFACE, prelates, premise, Prentice, rarest, reckless, reddish, relics, relish, restless, senseless, senses, sheriff, spendthrift, tariff, tempest, tenets, tennis, tenses, terrace, trellis, trenches, trespass, zealots, zealous
3 Syllables: USU
aesthetics, appendage, apprentice, asbestos, assemblage, athletics, attentive, commences, compendious, condenses, consensus, contentious, cosmetics, defenceless, defences, defenseless, defenses, defensive, demerits, develops, dilemmas, dispenses, domestics, embarrass, embellish, envelops, expenses, expensive, extensive, genetics, hysterics, impetuous, incentive, incestuous, inherits, intensive, inventive, kinetics, licentious, Marcellus, momentous, obstetrics, offences, offenses, offensive, percentage, Poetics, polemics, portentous, pretences, pretentious, preventive, relentless, replenish, retentive, sententious, stupendous, tremendous, unblemished, Vincennes
4 Syllables: UUSU
academics, apprehensive, comprehensive, conscientious, epidemics, inattentive, inexpensive, inoffensive, sacrilegious, unpretentious
Found 153 words across 3 groupings. Skipped 17 excess words of a similar stem.