3 Syllables: SUU
amiable, genital, malleable, permeable, pitiable, plentiful, sensible, sensual, sentinel, temporal, tenable, tentacles, variable, vegetable, ventricle
3 Syllables: UUS
4 Syllables: USUU
amenable, commendable, congenital, contemptible, conventional, defensible, dependable, dimensional, insensible, intentional, invariable, lamentable, ostensible, polemical, presentable, unenviable, unquenchable, untenable
4 Syllables: UUUS
5 Syllables: UUSUU
comprehensible, indefensible, indispensable, irremediable, reprehensible, unconventional, unintentional
Found 43 words across 5 groupings. Skipped 2 excess words of a similar stem.