octennial /ok-tenˈyəl, -i-əl/

1. Happening every eighth year
2. Lasting eight years

octennˈially adverb

• returniks
• re-turning
• returning
• returning officer
• returning officers
• return key
• return keys
• returnless
• return match
• return matches
• return of post
• return order
• return orders
• re-turns
• returns
• return shock
• return shocks
• return ticket
• return tickets
• return to our muttons
• retuse
• retying
• re-type
• re-typed
• re-types