2 Syllables: SU
barrel, Bengal, Bethel, Carol, Carroll, central, dental, devil, Eccles, emerald, Engels, entrails, Ethel, ethyl, Federal, festal, general, gentle, Gerald, Harold, Hegel, Herald, Kemble, Kendall, kennel, kettle, level, levelled, levels, medal, meddle, menstrual, mental, Merrill, metal, methyl, mettle, nestle, nettle, pebble, pedal, pencil, peril, pestle, petal, phenol, rebel, rental, revel, revelled, revels, Reynolds, settle, special, speckled, sterile, temple, tensile, treble, tremble, vengeful, ventral, vessel, vestal, Wendell, wrestle
3 Syllables: USU
ancestral, assemble, biennial, Centennial, credentials, dishevelled, dissemble, especial, essential, eventful, Fitzgerald, imperil, imperilled, orchestral, parental, perennial, potential, prudential, reassembled, resemble, resentful, revengeful, sequential, tangential, triennial, unsettled, utensils
4 Syllables: SUUU
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: UUUSU
6 Syllables: UUUUSU
Found 134 words across 6 groupings. Skipped 37 excess words of a similar stem.