# keep one's lips sealed

idiom

Source: https://englishreference.com/idiom/keep-ones-lips-sealed
Updated: 2026-08-10

## Meaning

To keep quiet; to keep a secret; to not tell.

## Examples

- I promise to keep my lips sealed about your surprise party.
- The manager asked the team to keep their lips sealed until the official announcement is made next week.
- Despite the intense pressure from the investigators to reveal the source, the witness remained steadfast and kept her lips sealed throughout the entire trial.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.