We have put together a list of words that are similar to BACKROOM.

2 Alternative Words Similar to backroom

1 Facility Noun      Synonym Words Like Facility
2 Installation Noun      Synonym Words Like Installation

5 definitions of backroom

1 A room near the rear of a premises, especially one only accessible to a privileged few and that can be used as an inconspicuous meeting place
2 Of, relating to, or happening in a backroom
3 Characterized by secrecy or anonymity
4 a room located in the rear of an establishment; usually accessible only to privileged groups
5 the meeting place of a group of leaders who make their decisions via private negotiations
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide