
Let slip something
Accidental Revelation
Use when someone unintentionally reveals information they meant to keep secret.

She let slip her friend's wedding plans before the official announcement.
Subtle Nuance
It often implies the speaker immediately regrets the slip or tries to correct it.

He realized he let slip the surprise and quickly changed the topic.
Unaware Disclosure
Sometimes used when the speaker doesn't immediately realize they've given away a secret.

In conversation, she let slip details about the new product without knowing its confidentiality.
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