tellon
verbUK /ˈtɛl ɒn/
US /ˈtɛl ɑn/
To tell a grown-up that someone did something wrong.
Please don't tell on me for eating the last cookie.
RELATED WORDS
OTHER MEANINGS
2. To reveal someone's secret or misdeed to an authority.
He told on his teammate for breaking the rules.
3. To have a noticeable bad effect on someone or something.
The long hours of practice began to tell on her health.
4. To count or give an account of something, especially in older usage.
The shepherd told on his flock each evening.