Or search: mod, chic, posh, natty, smart, swank, swish, faddy, chichi, classy, dapper, groovy, jaunty, quaint, rakish
3 Syllables: SUU
affable, laughable, passable, reasonable
4 Syllables: SUUU
applicable, charitable, habitable, navigable, palatable, pardonable, questionable, seasonable, treasonable
4 Syllables: USUU
impassable
5 Syllables: USUUU
abominable, companionable, determinable, imaginable, impressionable, inalienable, interminable, objectionable, unfashionable, unfathomable, unpalatable, unpardonable, unquestionable, unseasonable
6 Syllables: UUSUUU
ineradicable, unexceptionable, uninhabitable

Found 31 words across 5 groupings.