2 Syllables: SU
3 Syllables: SUU
Biblical, clinical, criminal, critical, cyclical, cynical, difficult, digital, feasible, integral, liberal, literal, littoral, lyrical, minimal, miracle, mystical, mythical, peaceable, physical, pinnacle, pitiful, pivotal, readable, regional, seasonal, syllable, typical, vehicle, visceral, visible, visual
3 Syllables: USU
3 Syllables: UUS
4 Syllables: SUUU
4 Syllables: USUU
additional, admissible, amenable, appreciable, atypical, centripetal, conceivable, conditional, derivable, despicable, divisible, divisional, empirical, Episcopal, equivocal, explicable, hospitable, illiberal, inimical, invisible, juridical, medicinal, municipal, nutritional, occipital, original, permissible, political, pontifical, procedural, provisional, Rabbinical, reciprocal, statistical, traditional, transitional, umbilical, uncritical, unspeakable
4 Syllables: UUUS
5 Syllables: UUSUU
aboriginal, analytical, egotistical, hypocritical, inadmissible, inconceivable, individual, indivisible, inexplicable, inhospitable, irresistible, irretrievable, metaphysical, monosyllables, unbelievable, unconditional, unequivocal, unimpeachable
Found 95 words across 8 groupings. Skipped 10 excess words of a similar stem.