inform on/against

idiom

: to give information about the secret or criminal activity of (someone) to the police

Despite pressure from the police he refused to inform on the other conspirators.

Examples of inform on/against in a Sentence

Recent Examples on the Web

Some see in his critique of the Mao era parallels to the current situation in China: the arbitrary rule of an aging leader, harsh treatment of dissent, and government programs that encourage people to inform on one another. —Ian Johnson, The New Yorker, 18 Aug. 2024

The latest inflation numbers will be accompanied by personal spending figures that will inform on services outlays after recent retail sales data showed less of an appetite for merchandise. —Craig Stirling, Fortune, 23 June 2024

Shaka King, 2021) Only the sophomore feature for writer-director Shaka King, this unconventional biopic tells the story of Chicago Black Panther Party leader Fred Hampton through the eyes of the man that infiltrated his inner circle to inform on him to the FBI. —Marcus Jones, IndieWire, 19 June 2024

Neighbors can also inform on live-in couples suspected of not having the necessary certificates. —Anant Gupta, Washington Post, 8 Feb. 2024