code of silence
code
ˈkəʊd
kewd
of
əv
ēv
si
saɪ
sai
lence
ləns
lēns

Definition & Meaning of "code of silence"in English

code of silence
01

*the practice of not disclosing important or vital information by members of a group, as due to the threat of violence, reprisal, being branded as a traitor, or an inherent sense of honor 

Examples
There are parts of the city where the code of silence is so strong that police don't even bother questioning the residents there. 
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