letter; personal correspondence
Refers to written communication, often with a formal or official nuance. Commonly used in legal or business contexts.
信書の秘密は法律で守られている。
The confidentiality of correspondence is protected by law.
会社から重要な信書が届いた。
An important letter arrived from the company.
correspondence delivery; private courier service for letters
opening sealed correspondence (crime)
opening sealed correspondence (crime)
Sino-Japanese compound of 信 (trust, message) and 書 (writing, document).