پشت سرکسی حرف زدن He went to my employer and talked impolitly behind my back او رفت پیش صاحبکارم و بابی ادبی پشت سرم حرف زد
پشت سر کسی حرف زدن
Used to say that someone intentionally says or does something when another person is not there and cannot know about it BEHIND SOMEONE'S BACK - Cambridge Dictionary She went behind his back and spoke directly to his supervisor. Merriam - Webster Dictionary
