4 Syllables: SUUU
aggravating, aggregating, agitating, allocating, animating, fascinating, graduating, navigating, palpitating, vacillating
5 Syllables: USUUU
accommodating, collaborating, congratulating, consolidating, contaminating, elaborating, elucidating, eradicating, evaporating, exaggerating, exasperating
Found 21 words across 2 groupings.