biweekly

What it means

1. not comparableOccurring once every two weeks; fortnightly.

   Synonyms: fortnightly, twi-weekly

2. not comparableOccurring twice a week.

   Synonyms: twice-weekly, semiweekly

In a sentence

The local paper is a biweekly.

Where it comes from

From bi- + week + -ly. The sense referring to twice a week can be analyzed as bi- + weekly.