4 Syllables: SUUU
cautionary, centenary, coronary, Dictionary, functionary, luminaries, luminary, mercenary, millinery, missionary, ordinary, pulmonary, sanguinary, seminary, stationary, stationery, urinary, veterinary, visionary
5 Syllables: USUUU
confectionery, discretionary, extraordinary, imaginary, inflationary, pituitary, precautionary, preliminary, probationary, reactionary, traditionary
6 Syllables: UUSUUU
Found 35 words across 3 groupings.