keep one's mouth shut informal not say anything, especially not reveal a secret 〈非正式〉守口如瓶: would he keep his mouth shut under interrogation? 审讯时他会守口如瓶吗? keep one's mouth shutbe or stay silent 闭嘴 * This is a cut throat business; keep your mouth shut. 这是性命相关的大事,不可乱说。 |