An absentee — a person who is absent from a meeting, class, or other event.
会議の欠席者は事前に連絡してください。
Please notify us in advance if you will be absent from the meeting.
クラスの欠席者が多くてテストの日程を変更した。
There were many absentees in the class, so the test date was changed.
欠席者名簿を受付で提出してください。
Please submit the list of absentees at the reception.