| If your therapy group has semimonthly meetings, how often should you expect to show up? A bimonthly meeting should take place “once every two months"; a biweekly, “once every two weeks.” A semimonthly meeting should be held “twice a month” and a semiweekly “twice a week.” That’s should. These words are often confused, and to spare nervous attendees the suspense, the only decent thing to do is to use substitute expressions like every two months or twice a month. | 1 |
| In the publishing world, where confusion is a rarity, a bimonthly always comes out every two months, and a biweekly every two weeks. | 2 |
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| The American Heritage® Book of English Usage. Copyright © 1996 by Houghton Mifflin Company. All rights reserved. |
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