宣戦布告

1. Origins, structure, and basic meaning

• Structure: 宣戦布告, read せんせんふこく, combines declaring an intent to wage war 宣戦 with public proclamation 布告.
• Basic usage: 隣国への宣戦布告 is a declaration of war, while 王者に宣戦布告する is a figurative challenge.

2. Common pitfalls and similar expressions

• Distinguishing meanings
  • Even figuratively, it signals a forceful intention to confront someone, not merely a wish to participate.