Or search: dramatist, playwright
2 Syllables: SU
belted, chariot, deadliest, eldest, Eliot, Elliot, Elliott, Harriet, heaviest, helmet, helpless, melted, pellets, pelvis, readiest, selfless, various, velvet, wealthiest, zealots
3 Syllables: SUU
penniless, readiness
3 Syllables: USU
calcareous, develop, develope, develops, envelop, gregarious, hilarious, nefarious, precarious, rebellious, vicarious
4 Syllables: UUSU
commissariat, multifarious, proletariat, Secretariat, undeveloped
5 Syllables: UUUSU
underdeveloped

Found 39 words across 5 groupings. Skipped 5 excess words of a similar stem.