正式

1. Origins, structure, and basic meaning

• Structure: 正式 is read as せいしき and means official or formal; it appears as 正式に or 正式な according to its role.
• Basic usage: It can mark an official announcement adverbially or modify a formal agreement.

2. Common pitfalls and similar expressions

• Making an official announcement
  • 正式に発表される means that the results will be announced through an official process. Example: 採用の結果は来週正式に発表される。
• Reaching a formal agreement
  • 正式な合意 refers to a formally established agreement between the organizations. Example: 二つの団体は協力について正式な合意を結んだ。