octennial /ok-tenˈyəl, -i-əl/

1. Happening every eighth year
2. Lasting eight years

octennˈially adverb

• easternized
• easternizes
• easternizing
• easternmost
• Eastern Orthodox Church
• Eastern Pahari
• easterns
• Eastern Standard Time
• Eastern Time
• Easter offerings
• easters
• Easter sepulchre
• Easter Sunday
• Eastertide
• Eastertime
• East Germanic
• East India Company
• East-Indiaman
• East Indian
• East Indies
• easting
• eastings
• eastland
• eastlands
• eastlin