実じつ母ぼ

noun

biological mother; birth mother; real mother

Refers to one's biological mother, as opposed to a stepmother, adoptive mother, or mother-in-law. Often used in formal or legal contexts.

• 彼かの女じょは実じつ母ぼの顔かおを知しらない。

  She doesn't know the face of her biological mother.

• 実じつ母ぼと養よう母ぼの両りょう方ほうと仲なかが良よい。

  I get along well with both my birth mother and my adoptive mother.