◎ 嘴严 zuǐyán[able to keep a secret;discreet in speech;cautious about speech] 说话谨慎,不说不该泄漏的话
嘴快
1.able to keep a secret; discreet in speech; cautious about speech
说话小心,不随便泄漏秘密。《儿女英雄传》第四十回:“你们两个有甚么事儿从没瞒过我,怎么这件事两人都嘴严的这个分儿上呢?”
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