also: しゅせい · そせい
noun
Refers to a person's family background, ancestry, or social standing by birth. Often used in formal or historical contexts.
彼は素性の良い家柄の出だ。
He comes from a family of good lineage.
素性を調べると、彼は貴族の血を引いていた。
Upon investigating his background, it turned out he was descended from nobility.
noun
Focuses on a person's personal history, true identity, or past circumstances, often with an implication of something hidden or unknown. Common in phrases like 素性が知れない (of unknown background).
その男は素性を隠して町に住み着いた。
The man settled in the town hiding his true identity.
彼女は素性の知れない人物を信用しなかった。
She didn't trust a person of unknown background.
noun
provenance; origin
Used for objects, artworks, or items to indicate their origin or history of ownership. Less common than the personal senses.
この骨董品は素性がはっきりしている。
This antique has a clear provenance.
Alternate kanji form, less common than 素性. Also has the obsolete reading すぞう.
Rare kanji form with the reading しゅせい (also obsolete しゅしょう).
Rare kanji form, read そせい (also すじょう in some contexts).
身元 also means identity or background, but is more commonly used in official contexts like identity verification (身元確認). 素性 often carries a nuance of hidden or questionable background.
出自 refers specifically to one's origin or lineage, similar to 素性 sense 1, but is more formal and less likely to imply secrecy.
Composed of 素 (element, basic) and 性 (nature, character), literally 'basic nature'. The spelling 素性 is the most common; alternate kanji forms like 素姓 and 種姓 reflect historical variations. The exact derivation is uncertain, but the word has been used since classical Japanese to refer to one's inherent background or identity.