4 Syllables: SUUU
cautionary, centenary, coronary, Dictionary, functionary, luminary, mercenary, millinery, missionary, ordinary, pulmonary, sanguinary, secondary, sedentary, seminary, stationary, stationery, urinary, veterinary, visionary
5 Syllables: USUUU
confectionery, discretionary, extraordinary, imaginary, inflationary, precautionary, preliminary, probationary, reactionary, traditionary
6 Syllables: UUSUUU
Found 33 words across 3 groupings.