2 Syllables: SU
blissful, bristle, Bristol, brittle, chisel, civil, cripple, crystal, Cyril, dismal, distal, fickle, fiddle, fiscal, giggle, grizzled, Israel, Israel's, little, Michel, middle, mineral, missile, Mitchell, nibble, Nichols, nickel, nipple, pickle, pistol, quibble, riddle, ripple, rivalled, scribbled, shrivelled, Sibyl, sickle, swivel, thistle, tickle, tittle, trickle, triple, trivial, vigil, virile, Whipple, whistle, wishful, wistful
3 Syllables: SUU
Biblical, clinical, criminal, difficult, digital, integral, liberal, literal, littoral, minimal, miracle, mythical, pinnacle, pitiful, pivotal, syllable, typical, visceral, visible, visual
3 Syllables: USU
acquittal, baptismal, belittle, committal, convivial, dismissal, epistle, initial, judicial, official, referral
4 Syllables: SUUU
4 Syllables: USUU
additional, admissible, conditional, derivable, despicable, divisible, divisional, Episcopal, equivocal, explicable, hospitable, illiberal, invisible, medicinal, municipal, nutritional, occipital, original, permissible, political, pontifical, provisional, reciprocal, satirical, traditional, transitional
4 Syllables: UUSU
5 Syllables: UUSUU
aboriginal, inadmissible, individual, inexplicable, inhospitable, irresistible, monosyllables, unconditional, unequivocal
Found 125 words across 7 groupings. Skipped 32 excess words of a similar stem.