Synonyms of centennial

2 Syllables
weekly, hundred, annual, monthly, daily, hourly, yearly, hundredth, rhythmic, cyclic, serial
3 Syllables
century, routine, perennial, regular, sporadic, orbital, infrequent, cyclical, centennials, recurring, fluctuating, spasmodic, periodic, recurrent, centurial, epochal, seasonal, repeated
4 Syllables
occasional, alternate, intermittent, isochronous, periodical, centenary, isochronal
5 Syllables
centuplicate
6 Syllables
on-again-off-again