不ふ忠ちゅう者もの

noun

disloyal person; traitor

Refers to a person who betrays trust or loyalty, often in a feudal, organizational, or personal context. Somewhat formal or literary.

• 彼かれは主しゅ君くんを裏うら切ぎった不ふ忠ちゅう者ものとして歴れき史しに名なを残のこした。

  He went down in history as a disloyal person who betrayed his lord.

• 組そ織しきにとって不ふ忠ちゅう者ものは許ゆるされない存そん在ざいだ。

  A disloyal person is unforgivable to the organization.