死去

1. Origins, structure, and basic meaning

• Structure: 死去 is read as しきょ and is a formal noun for a person’s death or passing; it also combines with する as a verb.
• Basic usage: Announcing someone’s passing appears in 死去を知らせる, while describing a peaceful death with family present appears in 静かに死去する.

2. Common pitfalls and similar expressions

• Register relative to 死ぬ
  • 死去 is a formal expression used in notices or official contexts, whereas 死ぬ is the ordinary direct verb for dying.