Definition
This is a four-character idiom (chengyu) meaning 'to keep one's mouth as tight as a bottle' — i.e., to stay completely silent about a secret. It's more formal and emphatic than the verb 保密 (bǎomì) and is often used in contexts of confidentiality, loyalty, or discretion.
f.e.
to keep one's mouth shuttight-lippedto guard a secret carefully
Examples
- ，守口如瓶，。Guānyú zhè jiàn shì, tā zǒngshì shǒu kǒu rú píng, yí gè zì yě bù shuō.He is always tight-lipped about this matter and doesn't say a single word.
- ，守口如瓶。Zuòwéi gōngsī héxīn chéngyuán, nǐ bìxū shǒu kǒu rú píng.As a core member of the company, you must keep your mouth shut.
- 守口如瓶，。Tā dāyìng shǒu kǒu rú píng, jué bú huì xièlòu zhège mìmì.She promised to be tight-lipped and would never leak this secret.
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