1A polite/formal expression for someone's death (passing away), often used in obituaries or formal announcements.
有名な作家が昨日死去したと新聞で報じられた。
The newspaper reported that a famous writer passed away yesterday.
祖母は静かに死去しました。家族だけでお別れの時間を持ちました。
My grandmother passed away peacefully. The family had a private farewell.