rat on someone
rat on (one)
To inform an authority figure of one's bad or illegal behavior. I can't believe you ratted on me like that to mom and dad—I'm never telling you anything ever again! The criminal ratted on his accomplices to avoid jail time.
See also: on, rat
Farlex Dictionary of Idioms.
rat (on someone)
in. to inform (on someone). Bill said he was going to rat on that punk.
See also: on, rat, someone
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
- rat (one) out
- rat on
- rat on (one)
- rat out
- ratted
- going to tell
- tattle
- going to tattle
- grass on (one)
- grasse