let in on

US /let ɪn ɑːn/
UK /let ɪn ɑːn/
"let in on" picture
1.

dahil etmek, sırrı vermek

to allow someone to share a secret or to know something that is not known by many people

:
They finally let me in on their plans for the surprise party.
Sonunda beni sürpriz parti planlarına dahil ettiler.
She refused to let him in on the secret.
Onu sırra dahil etmeyi reddetti.