Happening often; occurring frequently or repeatedly.
近頃は地震が頻繁に起きて心配だ。
Lately earthquakes have been occurring frequently, which is worrying.
会議が頻繁に開かれるため、スケジュールの調整が大変だ。
Because meetings are held frequently, it's hard to adjust the schedule.
頻繁な連絡の欠如がプロジェクトの遅れの原因だった。
Lack of frequent communication was the reason for the project's delay.