BEHIND ONE'S BACK

{adv. phr.} When one is absent; without one's knowledge or consent; in a dishonest way; secretly; sneakily. * /Say it to his face, not behind his back./ * /It is not right to criticize a person behind his back./ Contrast: TO ONE'S FACE.

{adv. phr.} When one is absent; without one's knowledge or consent; in a dishonest way; secretly; sneakily. * /Say it to his face, not behind his back./ * /It is not right to criticize a person behind his back./ Contrast: TO ONE'S FACE.

"за спиной"; без чьего-л. разрешения, не поставив в известность; за глаза

за спиной, без ведома, тайком