behind someone's back

prepositional phrase2

1. •
   Without somebody's knowledge; secretly.

   • The employees talked about their boss behind his back.
   • You will lose good karma if you say bad things behind people's backs.
2. •
   (India) Pursuing, nagging someone. Calque of వెంటపడు in Telugu.

   • Amma is constantly behind my back about my marks.