sexennial /sek-senˈyəl or -senˈi-əl/

1. Lasting six years
2. Recurring every six years

• exteriorises
• exteriorising
• exteriorities
• exteriority
• exteriorization
• exteriorize
• exteriorized
• exteriorizes
• exteriorizing
• exteriorly
• exteriors
• exterminable
• exterminate
• exterminated
• exterminates
• exterminating
• extermination
• exterminations
• exterminative
• exterminator
• exterminators
• exterminatory
• extermine
• extermined
• extermines