某氏

1. Origins, structure, and basic meaning

• Structure: 某氏 is read as ぼうし and is a respectful expression for a certain or unnamed person whose identity is not disclosed.
• Basic usage: Use 情報提供者を某氏と記す for referring to an informant as an unnamed person and 知人の某氏から本を譲り受ける for receiving a book from a certain acquaintance.

2. Common pitfalls and similar expressions

• Distinction between 某氏 and 氏名
  • The headword withholds or leaves a person's identity unspecified, while the comparison term means that person's actual full name.