3 Syllables: SUU
charity, chemically, chemistry, clarity, density, dentistry, effigy, Emily, enmities, enmity, entities, entity, lenity, levity, rarity, registry, verity, wretchedly
4 Syllables: USUU
aesthetically, aggressively, asperity, attentively, austerity, celebrity, confessedly, dexterity, excessively, extensively, genetically, hermetically, hysterically, identities, immensity, impressively, indemnity, intensities, intensity, intensively, majestically, necessity, numerically, obscenity, offensively, pathetically, poetically, progressively, propensity, severity, successively, summarily, symmetrically, vulgarity
5 Syllables: UUSUU
alphabetically, biochemistry, comprehensively, diametrically, energetically, geometrically, infidelity, insincerity, parenthetically, sympathetically, theoretically
6 Syllables: UUUSUU
Found 65 words across 4 groupings.