Biweekly, Bi-weekly, or Bi Weekly?
“Biweekly” is the standard closed spelling, but its frequency meaning is genuinely ambiguous: Cambridge records both “every two weeks” and “twice a week.” Clear scheduling prose should state the interval when misunderstanding would matter.
Write “biweekly” as one word. Because it can mean either every two weeks or twice a week, use “every two weeks” or “twice a week” when the schedule must be unambiguous.
Key details
Further guidance
Clarity
For contracts, schedules, payroll, and deadlines, explicit interval wording is safer than relying on the ambiguous frequency word.
Meaning
Cambridge records both every-two-weeks and twice-a-week senses in general English.
Spelling
Cambridge lists the headword as “biweekly,” written as one word.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Biweekly — English meaning (opens in a new tab)Cambridge University Press · Dictionary definition showing both accepted frequency senses