Or search: fete, gala, feria, festival, jamboree, diversion, recreation, celebration, conviviality, jollification
2 Syllables: SU
histories
3 Syllables: SUU
fisheries, liveries, miserably, miseries, mysteries, Philippines, Philistines, Pyrenees, similes, tyrannies, vicarage, visibly, vividly
3 Syllables: USU
deliveries
4 Syllables: USUU
abilities, affinities, antipathies, antipodes, antiquities, captivity, civilities, complicity, conspiracies, divinities, explicitly, facilities, felicity, festivity, hostilities, implicitly, invisibly, nativity, proclivities, publicity, simplicity, toxicity, utilities
5 Syllables: UUSUU
aborigines, capabilities, conductivity, creativity, disabilities, domesticity, eccentricity, elasticity, electricity, irresistibly, liabilities, possibilities, probabilities, productivity, relativity, selectivity, specificity, unequivocally
6 Syllables: UUUSUU
impossibilities, responsibilities, susceptibilities

Found 59 words across 6 groupings.