fly-on-the-wall
fly
flaɪ
flai
on
ɒn
on
the
ðə
dhē
wall
wɔ:l
vawl

Definition & Meaning of "fly-on-the-wall"in English

fly-on-the-wall
01

watching a situation without being noticed or actively involved 

Examples
The documentary adopted a fly-on-the-wall approach to show the daily lives of the residents. 
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