2 Syllables: SU
3 Syllables: SUU
admirable, bearable, cerebral, clerical, credible, decimal, edible, equable, favorable, festival, genital, legible, medical, miserable, parable, pedestal, plentiful, Reginald, seminal, several, skeletal, tenable, terrible, vegetable
4 Syllables: SUUU
answerable, charitable, creditable, eligible, equitable, estimable, favourable, honorable, honourable, measurable, memorable, negligible, pleasurable, separable, tolerable, venerable, vulnerable
4 Syllables: USUU
accessible, amenable, chimerical, confessional, congenital, Congressional, desirable, detestable, discoverable, ephemeral, execrable, illegible, impeccable, incredible, ineffable, numerical, polemical, professional, regrettable, transferable, unbearable, untenable
5 Syllables: USUUU
considerable, dishonorable, dishonourable, impenetrable, impressionable, incomparable, inequitable, inestimable, inevitable, inexorable, innumerable, inseparable, insufferable, insuperable, intelligible, intolerable, invulnerable, irrefragable, irreparable, irrevocable, recoverable, unalterable, unanswerable, unconquerable, unfavorable, unfavourable, unutterable
5 Syllables: UUSUU
hypothetical, inaccessible, incontestable, indigestible, inexpressible, irrepressible, undesirable, unforgettable
6 Syllables: UUSUUU
6 Syllables: UUUSUU
Found 104 words across 8 groupings. Skipped 7 excess words of a similar stem.