Resignation or retirement from an office or post; stepping down from a position (often used in formal or official contexts).
社長は来月退任し、後任が就任する予定だ。
The president will step down next month, and a successor is scheduled to take office.
創業者は退任後も名誉会長として関わることになった。
The founder will remain involved as an honorary chairman after stepping down.
彼女は健康上の理由で退任を決めた。
She decided to resign for health reasons.