tell on
verb
- to tattle on; to inform on others' actions to authorities; to squeal or be a tattletale/telltale
Wiktionary
verb
- To inform on, to rat out; to tell a person in authority that someone else has done something wrong.
“My sister told on me when I didn't go to school.”
“Lest they should tell on us, saying, So did David.”
- To cause visible strain to.
“Years of drinking started to tell on his body.”