8 letters · 16 points in Scrabble
adjective occurring every second year
adjective occurring or payable twice each year
adverb every two years
originEtymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- English yearly English biyearly From bi- + yearly.
Etymology from Wiktionary, CC BY-SA 3.0