To become an official wise guy requires something similar - swearing to omertà, or the Mafia code of silence.

This infuriates Tony to the point where he violates traditional Mafia code by striking him repeatedly in front of the entire family.

Homosexuality is reportedly incompatible with the American Mafia code of conduct.

Mafia code of silence.

It could refer to the Mafia code of being a member only and never a retiree, just what Eugene Pontecorvo attempted to become.

Testa sported a thick mustache despite Mafia code stating that members could not sport mustaches.

Did people of Italian ancestry grit their teeth and submit to omerta, the Mafia code of silence?

In doing so, however, he was violating the Mafia code of silence, known as omertà.

As a made man, he is bound by the Mafia code of Omertà and must serve loyally for life.

But he conceded that because of the Mafia code of silence the Government could not say exactly what had gone on at the meeting.