let in on
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To disclose or tell (a secret) to (someone); to share (privileged information) with (someone); to inform (someone) of (a secret). See Usage notes below.
Where it’s used:
Used
American English
Examples
Do you think we should let him in on the shortcut?
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “let in on” mean?
To disclose or tell (a secret) to (someone); to share (privileged information) with (someone); to inform (someone) of (a secret). See Usage notes below.
Is “let in on” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.