Quick Tip:
Avoid Confusion by Avoiding "Bi-" Words
By Will Newman

If you've ever written something like "You'll receive our investment advisory bi-monthly," you're coming perilously close to confusing your prospect. Using a "bi-" word is NEVER a good thing … and can cause lost sales.

Does bi-monthly mean every two months, as some people think? Or does it mean twice a month, as others believe?

What about bi-weekly or bi-annually?

When I researched a number of reliable sources, I found that "bi-" can mean BOTH – every two weeks/months/years or twice a week/month/year! How's that for being really confusing?

The lesson: When writing copy, avoid using "bi-" when discussing time or frequency.