血縁|けつえんketsuen[0]heiban (flat)

1. nounblood relationship; consanguinity
   正直しょうじきなところ、その当時とうじの僕ぼくは血縁けつえんがどうとか、続柄つづきがらがどうとか、そういう話はなしはまるで理解りかい出来できちゃいなかった。↗

   Truthfully, at that time, I didn't have the first idea about such talk: family links, blood relations or whatever.
2. nounblood relative

• Related縁故えんこWrittenWritten/formal: kinship and personal connections, as in 「縁故採用」; the tie need not be one of blood.
• Related続柄つづきがらWrittenWritten/formal: the family-relationship label used on household registers and documents, as in 「続柄：長男」; it names the relationship type, not limited to blood ties.
• Related類縁るいえんWrittenWritten/formal: affinity or kinship, often in biological classification as 「類縁種」; not restricted to human blood relations.
• Antonym他人たにんNeutralNeutral: anyone other than oneself; also an unrelated outsider, as in 「赤の他人」 — that sense is the opposite of 「血縁」.
• Antonym姻戚いんせきWrittenWritten/formal: relatives through marriage, e.g. in-laws; the counterpart of blood-based 「血縁」.

Use 「血縁」 for blood-based kinship, as in 「血縁関係」「血縁者」. For the relationship recorded on registers or documents say 「続柄」, and for personal connections 「縁故」; the opposites are marriage kin 「姻戚」 and unrelated 「他人」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 親子おやこ・兄弟姉妹きょうだいしまいなど血ちの繋つながりのある関係かんけい。また、その人ひと。