3 Syllables: SUU
cavities
4 Syllables: USUU
brutality, capacities, centrality, cordiality, fatality, humanities, localities, mentality, plurality, venality
4 Syllables: UUSU
analyses
5 Syllables: UUSUU
criminality, illegality, immorality, immortality, informality, nationality, personalities, personality, principalities, principality, punctuality, rationality, speciality
6 Syllables: UUUSUU
eventuality, impartiality, instrumentality, municipalities, originality, sentimentality
7 Syllables: UUUUSUU
artificiality, constitutionality, individuality

Found 34 words across 6 groupings.