B1
often
Dictionary examples:
I frequently forget my keys, but never my pizza delivery number! (0.0)
My plants frequently die, but my excuses keep growing! (0.0)
I frequently talk to myself. It's the only way to get expert advice! (0.0)
frequently asked questions (13.1)
I see him quite frequently. (15.6)
The buses run less/more frequently at certain times. (24.2)