English version

fly-on-the-wall

From Longman Dictionary of Contemporary English
Related topics: Television & radio
fly-on-the-wallˌfly-on-the-ˈwall adjective [only before noun] 🔊 🔊 AMTWATCHa 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 fly2(6)
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