4 ms·If you mix the definitions, biweekly and bimonthly can even be the same timeframe!by antod 3y agoIf you mix the definitions, biweekly and bimonthly can even be the same timeframe!tech2 3y agoOr, since we have a word already, we could use that... Fortnightly. Biweekly needs to mean, specifically, twice a week.xpe 3y agoI like that. And we could use halfweekly to mean twice a week. And halfmonthly to mean somewhere between 14 and 15.5 days.