背はい信しん者しゃ

noun

traitor; betrayer

Refers to a person who betrays trust, faith, or a cause. Often used in formal or serious contexts.

• 彼かれは仲なか間まを裏うら切ぎった背はい信しん者しゃだ。

  He is a traitor who betrayed his comrades.

• その政せい治じ家かは国こく民みんの信しん頼らいを裏うら切ぎった背はい信しん者しゃとして非ひ難なんされた。

  The politician was condemned as a betrayer who broke the people's trust.