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The Idiom Attic - a collection of hundreds of English idioms, each one explained.

The meaning of "a fly on the wall"

" A fly on the wall "
1. An unperceived observer - able to see and hear but not be seen or heard. 2 - A form of cinema in which events are recorded without direction.
1 - I wish I could have been a fly on the wall when Putin met Obama. 2 - These reality shows are just the same as the old fly-on-the-wall documentaries.
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