# let something slip

idiom

Source: https://englishreference.com/idiom/let-something-slip
Updated: 2026-08-10

## Meaning

To accidentally reveal a secret.

## Examples

- I accidentally let the secret slip during dinner.
- He tried to keep the surprise party a secret, but he let it slip when his friend asked about the weekend plans.
- Despite her careful efforts to maintain discretion regarding the merger, she inadvertently let the sensitive information slip during a casual conversation with a competitor.

---

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.