vicennial /vī-senˈyəl/

1. Lasting, or coming at the end of, twenty years
2. Occurring every twenty years

• aggrandized
• aggrandizement
• aggrandizements
• aggrandizes
• aggrandizing
• aggrate
• aggrated
• aggrates
• aggrating
• aggravate
• aggravated
• aggravated burglary
• aggravates
• aggravating
• aggravatingly
• aggravation
• aggravations
• aggregate
• aggregated
• aggregately
• aggregates
• aggregating
• aggregation
• aggregations
• aggregative