多た重じゅう人じん格かく

noun

multiple personality; split personality

Refers to the psychological condition now more formally called Dissociative Identity Disorder (DID). In everyday Japanese, it can also be used loosely to describe someone who seems to have very different sides to their character.

• 彼かれは多た重じゅう人じん格かくと診しん断だんされた。

  He was diagnosed with multiple personality disorder.

• あの人ひとはまるで多た重じゅう人じん格かくみたいに態たい度どが変かわる。

  That person changes their attitude as if they have a split personality.