1.
biological father; birth father; one's real father
One's father by blood, as opposed to a stepfather or adoptive father. Used in formal or legal contexts.
実父に会いたい。
I want to meet my biological father.
彼女は実父の顔を知らない。
She doesn't know her birth father's face.
書類には実父の名前を記入してください。
Please enter your biological father's name on the form.
A formal term used to distinguish a biological father from a stepfather (義父/継父) or adoptive father (養父). Common in legal documents, family registers, and discussions of family structure.
RELATED TERMS:
- 実母: biological mother
- 義父: father-in-law; stepfather
- 養父: adoptive father
- 継父: stepfather
REGISTER:
This is a formal, somewhat literary word. In casual speech, people are more likely to say 本当の父 or 産みの親 to mean "real father" or "birth parent."