behind-the-scenes

adjective
UK /bɪˌhaɪnd ðə ˈsiːnz/
US /bɪˌhaɪnd ðə ˈsiːnz/

Happening where people cannot see it.

The movie showed behind-the-scenes clips of the actors practicing.


OTHER MEANINGS

2. Work done quietly by people who are not seen.

The behind-the-scenes team made sure the show ran smoothly.

3. Not known to the public.

There was a lot of behind-the-scenes planning for the surprise party.

4. The parts of a film or show that show how it was made.

We watched a behind-the-scenes video about the special effects.