2 Syllables: SU
Bengal, central, dental, emerald, Engels, entrails, Federal, generals, gentle, Kemble, Kendall, kennel, menstrual, mental, pencil, phenol, rental, Reynolds, temple, tensile, tremble, vengeful, ventral, Wendell
3 Syllables: SUU
bearable, cerebral, clerical, credible, decimal, edible, equable, festival, genital, legible, medical, parable, pedestal, plentiful, preferable, Reginald, seminal, several, skeletal, temporal, tenable, terrible
3 Syllables: USU
assemble, biennial, Centennial, credentials, dissemble, essential, eventful, parental, perennial, potential, prudential, reassembled, resemble, resentful, revengeful, sequential, tangential, triennial, utensils
4 Syllables: SUUU
4 Syllables: USUU
accessible, amenable, chimerical, confessional, congenital, Congressional, detestable, ephemeral, execrable, illegible, impeccable, incredible, ineffable, numerical, polemical, professional, regrettable, unbearable, untenable
4 Syllables: UUSU
accidental, confidential, consequential, continental, deferential, departmental, detrimental, differential, elemental, existential, exponential, fundamental, incidental, incremental, influential, instrumental, monumental, Occidental, Oriental, ornamental, penitential, pestilential, preferential, presidential, providential, regimental, residential, reverential, sentimental, supplemental, temperamental, transcendental, uneventful
5 Syllables: UUSUU
hypothetical, inaccessible, incontestable, indigestible, inexpressible, irrepressible, unforgettable
5 Syllables: UUUSU
6 Syllables: UUUSUU
6 Syllables: UUUUSU
Found 133 words across 10 groupings. Skipped 20 excess words of a similar stem.