Question

blow the whistle Brian refused to blow the whistle on his boss for fear of losing his well-paid job.

Accepted Answer

If you report an illegal or socially-harmful activity to the authorities, and give information about those responsible for it, you blow the whistle or you are a whistle-blower.

Phrase/Idiom	blow the whistle
Definition	If you report an illegal or socially-harmful activity to the authorities, and give information about those responsible for it, you blow the whistle or you are a whistle-blower.
Example	Brian refused to blow the whistle on his boss for fear of losing his well-paid job.

Blow Whistle Report Illegal Socially Harmful Activity Authorities Give