本ほん元もと

noun

origin; source; main branch of a family

Refers to the original source or root of something, or the main lineage in a family context. The family sense is less common in modern everyday speech.

• この問もん題だいの本ほん元もとを探さぐる必ひつ要ようがある。

  We need to investigate the origin of this problem.

• 彼かれは本ほん元もとの家か系けいを継ついでいる。

  He inherits the main branch of the family.