The phrase "more quinquennial" implies something that happens every five years or a period of five years. There are, however, several alternative synonyms that convey the same meaning. Some examples include "quinquennially," "occurring every quinquennium," "every five years," "a five-year cycle," and "occurring every half-decade." These phrases portray a consistent, regular pattern of an event happening every five years. Whether referring to a celebration, a political event, or an organizational review, these synonyms help to convey the frequency and regularity of the five-year interval. Each one offers an alternate way to convey this concept, depending on the context in which it is being used.