1. Every two weeks or fortnightly.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• byweekly,
• aweekly,
• bieweekly,
• biweeky,
• viweekly,
• niweekly,
• hiweekly,
• giweekly,
• buweekly,
• bjweekly,
• biweely,
• biwekely,
• biweeklyy,
• bi weekly,
• triweekyl,
• bi-wedkly,
• b weekley,
• biweekley,
• bi-weekley,
• beweekly

• weekly.

The adjective form of the word "biweekly" is "biweekly". The word can function as both an adjective and an adverb, meaning occurring or appearing every two weeks.

The plural of the "biweekly" can be the "biweeklies".

The singular of the "biweekly" can be the "biweekly".