BIENNIAL

Taking place every other year (8)

Solution has appeared in 3 crosswords (2 across and 1 down):

• Quick crossword No 16,486 — 2023-03-09 00:00:04
  24A: Occurring every two years (8)
• Quick crossword No 15,756 — 2020-11-05 00:00:30
  13D: Every second year (8)
• Quick crossword No 15,499 — 2020-01-10 00:00:22
  16A: Taking place every other year (8)