カインコンプレックス

noun

Cain complex

A psychological term for intense sibling jealousy that can turn into hatred, named after the biblical story of Cain and Abel. Used mainly in psychoanalytic or literary contexts.

• 彼かれは弟おとうとに対たいしてカインコンプレックスを抱いだいているようだ。

  He seems to have a Cain complex toward his younger brother.