Or search: inca, zulu, inka, umma, biome, horde, xhosa, aleut, ummah, accord, hamlet, parish, suburb, uptown, warren
3 Syllables: SUU
eulogies, musically, nudity, stupidly, suitably, Tuileries, unities, unity
4 Syllables: USUU
annuities, annuity, community, community's, confusedly, credulity, gratuity, immunities, immunity, impunity, presumably
5 Syllables: UUSUU
ambiguities, ambiguity, assiduity, contiguity, continuity, importunities, importunity, incongruities, incongruity, incredulity, ingenuity, opportunities, opportunity, perpetuity, perspicuity, superfluity
6 Syllables: UUUSUU
discontinuity

Found 36 words across 4 groupings.