My lips are sealed

Definition 1 of 1

Pro Tip 1/3

Use it to reassure someone that you are trustworthy and will not disclose confidential information.

Don't worry about me spilling the beans; my lips are sealed.

Pro Tip 2/3

It's often used in a friendly, light-hearted manner to make the assurance of secrecy feel less serious.

I've already heard the surprise party plan – but my lips are sealed!

Pro Tip 3/3

This phrase is casual, more common in informal conversations than in formal or official settings.

Between you and me, he's planning to propose, but my lips are sealed.

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