silent as the grave
成語所屬單字silent
silent as the grave — 慣用語
1. completely quiet or completely unwilling to share a secret.
1.慣用語
釋義
鴉雀無聲；守口如瓶
completely quiet or completely unwilling to share a secret.
例句
The empty courtroom was silent as the grave when the judge walked in to read the verdict.
You can tell Esme anything; she is silent as the grave about other people's secrets.