Definition of "behind closed doors" in English

Prepositional phrase

1. In private; in one's private life; lacking (normal) public disclosure, in camera.

   • What you do with your girlfriend behind closed doors is none of my business.

2. Without public spectators.

   • Libya's opening home match in the World Cup qualifiers against Cameroon will be played at a neutral venue and behind closed doors, FIFA said on Friday.

3. stored in a hidden place.