sexennial /sek-senˈyəl or -senˈi-əl/

1. Lasting six years
2. Recurring every six years

• parrhesia
• parrhesias
• parricidal
• parricide
• parricides
• parried
• parries
• parritch
• parritches
• parrock
• parrocked
• parrocking
• parrocks
• parroquet
• parroquets
• parrot
• parrot-beak
• parrot-beaks
• parrot-bill
• parrot-bills
• parrot-coal
• parrot-cries
• parrot-cry
• parrot disease
• parroted