Definition of tell on
1 informal : to tell someone in authority about the bad behavior or actions of (someone else) Please don't tell on me.
2 : to have a noticeable effect on (someone or something) The stress began to tell on her face/health.
Word by Word Definitions
: count, enumerate
: to relate in detail : narrate
: to give utterance to : say
: hill, mound
: an ancient mound in the Middle East composed of remains of successive settlements
Seen and Heard
What made you want to look up tell on? Please tell us where you read or heard it (including the quote, if possible).