2 Syllables: SU
Barrett, Bennet, Bennett, beverage, blemish, blesses, checklist, chemist, cherish, cleric, credit, deathless, debit, Denis, Dennis, desperate, devilish, dresses, edges, Ellis, epic, Eric, Erich, Essex, ethic, fairest, ferric, festive, fetish, Flemish, Frederic, Frederick, garish, garret, Garrett, Garrick, Greenwich, guesses, Harris, hedges, hellish, Herrick, ledges, menace, merits, meshes, message, messes, metric, Paris, parish, perish, pledges, prelate, premise, presage, presses, reddish, relic, relish, respite, restive, Senate, sheriff, sheriff's, sketches, stresses, stretches, tennis, tresses, Venice, vestige, wedges, wretches
3 Syllables: SUU
3 Syllables: USU
acetic, addresses, aesthetic, aggressive, alleges, angelic, appellate, ascetic, athletic, authentic, barbaric, caresses, confesses, cosmetic, decrepit, depresses, digestive, distresses, domestic, embellish, emetic, endemic, esthetic, excesses, excessive, expresses, expressive, generic, genetic, geometric, Hellenic, Homeric, hysterics, impresses, impressive, kinetic, magnetic, majestic, obsessive, obstetrics, oppresses, oppressive, pathetic, phonetic, poetic, polemic, possesses, possessive, professes, progressive, prophetic, regressive, replenish, repressive, successes, successive, suggestive, suppresses, symmetric, synthetic, systemic, theoretic, unblemished
4 Syllables: UUSU
academic, apathetic, arithmetic, atmospheric, diabetic, energetic, epidemic, esoteric, hygienic, pathogenic, sacrilegious, sympathetic
5 Syllables: UUUSU
6 Syllables: UUUUSU
Found 155 words across 6 groupings. Skipped 24 excess words of a similar stem.