Or search: definitely, emphatically
2 Syllables: SU
diary, fiery, ivory, Priory
3 Syllables: SUU
binary, bribery, dynasty, finally, finery, inquiry, irony, mightily, piety, piously, piracy, primacy, privacy, privately, quietly, righteously, vitally
3 Syllables: USU
enquiry
4 Syllables: USUU
advisedly, advisory, anxieties, anxiety, excitedly, proprieties, propriety, psychiatry, refinery, reliably, sobriety, varieties, variety
5 Syllables: UUSUU
impropriety, indescribably, notoriety, supervisory, undeniably

Found 40 words across 5 groupings.