FLY-ON-THE-WALL


Meaning of FLY-ON-THE-WALL in English

ˌfly-on-the-ˈwall BrE AmE adjective [only before noun]

a fly-on-the-wall television programme shows people’s daily lives in a very natural way, because they forget that they are being filmed ⇨ be a fly on the wall at ↑ fly 3 (6)

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.