3 Syllables: SUU
amity, cavities, classically, drastically, graphically, gravity, lavishly, magically, passively, placidly, radically, tacitly, tragically, vanity
4 Syllables: USUU
brutality, calamity, capacities, capacity, centrality, cordiality, dogmatically, dramatically, dynamically, fantastically, fatality, humanity, insanity, mechanically, mentality, organically, plurality, rapacity, sagacity, sarcastically, schematically, sporadically, tenacity, venality, veracity
5 Syllables: UUSUU
automatically, Christianity, criminality, democratically, geographically, illegality, immorality, immortality, informality, mathematically, nationality, personality, principality, punctuality, rationality, speciality, systematically
6 Syllables: UUUSUU
enthusiastically, eventuality, impartiality, instrumentality, originality, sentimentality
7 Syllables: UUUUSUU
artificiality, constitutionality, individuality

Found 65 words across 5 groupings.