let in on
US /let ɪn ɑːn/
UK /let ɪn ɑːn/
1.
dejar participar en, poner al tanto de
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.
Finalmente me dejaron participar en sus planes para la fiesta sorpresa.
•
She refused to let him in on the secret.
Ella se negó a dejarlo participar en el secreto.