centennial Synonyms

centenary on certain occasions tercentenary septennial secular seasonal repeated regular recurrent quotidian quadrennial periodical periodic orbital octennial monthly menstrual tertian triennial centuries-old semestral one-hundredth hundred-year-old wedding anniversary tercentennial sesquicentennial quincentenary diamond jubilee cwt age-old time period long hundred 100th yearly leap year intermittent centigrade centesimal centred centennially centenarian centare cental catamenial birthday biennial bicentennial bicentenary annual anniversary