Or search: sociable
3 Syllables: SUU
fashionable, reasonable
4 Syllables: SUUU
answerable, pardonable, questionable, seasonable, treasonable
5 Syllables: USUUU
abominable, determinable, imaginable, impressionable, inalienable, interminable, objectionable, unanswerable, unfashionable, unpardonable, unquestionable, unseasonable
6 Syllables: UUSUUU
unexceptionable

Found 20 words across 4 groupings.