名なを汚けがす

expression, godan verb (-su)

to shame the name (of); to blot the reputation (of)

Fixed expression used when someone's actions bring disgrace to a person, family, school, or organization. Often used in formal or serious contexts.

• 彼かれの不ふ正せい行こう為いは学がっ校こうの名なを汚けがした。

  His misconduct shamed the school's name.

• そんなことをしては、家か族ぞくの名なを汚けがすことになる。

  Doing such a thing would blot the family's reputation.