tell on
Beginner (A2) informal
To go and tell a teacher or parent that someone else did something bad — or for something to start showing it's harming you.
"If you keep pulling my hair, I'm going to tell on you to the teacher."
Hear it in context
Picking Your Nose Is Cool | The Basement Yard #549
The Basement Yard · 50:44
Tell on me.
Picking Your Nose Is Cool | The Basement Yard #549
The Basement Yard · 50:44
Tell on me.
Khabib vs Lex: Training with Khabib | FULL EXCLUSIVE FOOTAGE
Lex Fridman · 0:29
You can tell on these mats.
Ridiculousnessly Next-Level Pranks 🤫 SUPER COMPILATION | Ridiculousness
MTV's Ridiculousness · 33:27
which you can't tell on camera,
The Teacher's Dark Secret 2026 | A Thriller Movies 2026 New Releases | Based On True Story 2026
Central Entertainment · 77:57
Was he going to tell on you?