>Semi-annual means twice a year, so semi-weekly means twice a week. Bi-weekly means every two weeks. However, many people don't know the difference and will use bi-weekly to mean twice a week.
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>>Can anyone please give a clue: does bi-weekly mean twice a week or twice a month?
Thanks, Craig. Even in Webster's there is room for ambiguity - but at least as a "noun" it seems to give a straight answer, along the lines of your post.
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António Tavares Lopes