biennial /bī-enˈi-əl or -enˈyəl/

1. Lasting two years
2. Happening or appearing once in two years

1. A plant that flowers and fruits only in its second year, then dies
2. An event taking place or being celebrated every two years

biennˈially adverb

• cruelties
• cruelty
• cruelty-free
• cruet
• cruets
• cruet-stand
• cruet-stands
• cruise
• cruise control
• cruised
• cruise missile
• cruise missiles
• cruiser
• cruisers
• cruiserweight
• cruiserweights
• cruises
• cruiseway
• cruiseways
• cruisewear
• cruisewears
• cruisie
• cruisies
• cruising
• cruive