tell on

US /tel ɑːn/
UK /tel ɑːn/
"tell on" picture
1.

mách, tố cáo

to inform an authority figure about someone's bad behavior

:
If you don't stop, I'm going to tell on you.
Nếu bạn không dừng lại, tôi sẽ mách bạn.
The little boy decided not to tell on his sister.
Cậu bé quyết định không mách chị gái mình.