I looked in onelook.com, and the first three dictionaries I checked all said that biweekly means both twice a week and every two weeks. Nimonthly has a similar dichotomy of meaning. So I checked the OED, which says that the confusion might be avoided by using the prefix semi.

But nowhere do I get a clue as to why the double usage.

Hey, it's English!

Welcome aboard, Blondegirl. May we call you BG for short?

TEd



TEd