sexennial /sek-senˈyəl or -senˈi-əl/

1. Lasting six years
2. Recurring every six years

• helot
• helotage
• helotages
• helotism
• helotisms
• helotries
• helotry
• helots
• help
• helpable
• helpdesk
• helpdesks
• helped
• helper
• helpers
• helper T cell
• helper T cells
• helper T lymphocyte
• helper T lymphocytes
• helpful
• helpfully
• helpfulness
• helpfulnesses
• helping
• helping hand