Behind-the-scenes

прилагательное закулисный, кулуарный; негласный Например: behind-the-scenes activities — кулуарные интриги Синоним(ы): backstage, offstage

Большой англо-русский словарь

Behind-the-scenes

adjective 1. being or working out of public view or in secret Example: behind-the-scenes lobbying for more money Example: a behind-the-scenes player 2. revealing or reporting the hidden workings Example: a behind-the-scenes account Example: a behind-the-scenes glimpse

Merriam-Webster's Collegiate Dictionary