Or search: fury, megaera, tisiphone
3 Syllables: SUU
charities, chemically, density, enmities, enmity, entities, entity, Hebrides, lenity, rarities
4 Syllables: USUU
celebrities, identities, immensity, indemnity, intensities, intensity, necessities, obscenity, propensity, severities

Found 20 words across 2 groupings.