tell on
US /tel ɑːn/
UK /tel ɑːn/

1.
mengadu, melaporkan
to inform an authority figure about someone's bad behavior
:
•
If you don't stop, I'm going to tell on you.
Kalau awak tak berhenti, saya akan mengadu tentang awak.
•
The little boy decided not to tell on his sister.
Budak lelaki itu memutuskan untuk tidak mengadu tentang kakaknya.