tell on

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

يخبر عن, يفشي سر

to inform an authority figure about someone's bad behavior

:
If you don't stop, I'm going to tell on you.
إذا لم تتوقف، سأخبر عنك.
The little boy decided not to tell on his sister.
قرر الصبي الصغير ألا يخبر عن أخته.