Word
Kana: せい Romaji: sei Level: N3

Meaning in English

surname, family name

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Word context

What it means

What does 姓 mean? It denotes a person's family name or surname, the inherited name used to identify a person's lineage within a family. In contemporary Japanese usage, it appears primarily in formal or official contexts or when referring to someone's lineage; in everyday life, many speakers use 苗字 for the surname instead.

Main meanings

  • Lineage indicator: a marker of a family line that identifies a person as part of a clan or lineage
  • Official and formal contexts: commonly found in legal forms, genealogical records, and formal writing
  • Full-name concept: when paired with 名 to form 姓名, it denotes the surname together with the given name

How to use it

Used in formal discourse, legal documents, and genealogical contexts; in everyday conversation, people typically use 苗字 for the surname; polite references to a person’s surname employ the phrase go-sei in written and spoken Japanese; when referring to a full name, 姓 is paired with 名 to form 姓名 in formal writing.

Variants and close terms

  • 苗字 (myouji) — everyday term for surname
  • 氏 (shi) — formal or third-person reference to a surname in documents and speeches
  • ご姓 (go-sei) — polite form for asking someone's surname; romanization go-sei

Composition

  • 女 left radical; commonly interpreted as indicating kinship or family linkage
  • 生 right component; conveys life or birth; together with the left part, the term expresses belonging to a lineage

Etymology

On'yomi sei — borrowed from Chinese 姓 (xing4). The kanji is composed of 女 left and 生 right, a traditional formation associated with lineage; phonetic adaptation in Japanese yields the reading sei and there is no native kun-reading.

Origin

Meiji period modernization: Japan mandated the adoption of family names for all citizens, leading to the widespread use of 姓 as the surname term in official registries and everyday life; before that, many people used personal names or clan-related names (苗字) and the usage of 姓 varied by region.

Word class

Noun (名詞)

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