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3. inform on

inform on

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inform on someone

to tell the authorities about someone; to tattle on someone. I am going to have to inform on you. Liz informed on Ken to their mother.

See also: inform, on

inform someone on someone

to tattle (on someone) (to someone). I will inform the teacher on you! Billy informed his mother on Bobby.

See also: inform, on

inform on

or inform against

v.

To disclose confidential or incriminating evidence about someone to an authority: The FBI agent informed on the drug dealers. You can't force me to inform against my own family.

See also: inform, on