bi-

bi-
This prefix denoting ‘two’ or ‘twice’ causes much confusion in words such as biweekly, bimonthly, etc., because it is used to mean (for example) ‘twice a week’ as well as ‘every two weeks’. Rules do not help because they are not universally followed; it is best to avoid the problem by using terms such as twice a week and twice-weekly on the one hand, and every two weeks and fortnightly on the other. Bi (without the hyphen) is a recent informal shortening of bisexual.:

• There are no gay or lesbian or bi or tranny bookstores in Lisbon —Curve Magazine, AmE 2002 [OEC].


Modern English usage. 2014.

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