BIENNIAL

Meaning

Happening every two years.

Etymology

Origin: Latin

Borrowed from Latin bienni(um) (“two-year period”) [from bis, bi- (“twice”) + annus (“year”)] + -al (suffix forming adjectives). By surface analysis, bi- + -ennial.

Synonyms & Antonyms

NYT Puzzle Appearances

Accepted in 5 recorded puzzles:

• 2025-12-14BVANIEL
• 2025-04-19NAIEBFL
• 2024-11-17NABEILP
• 2023-12-12NVALIBE
• 2023-02-17BPANIEL