pervert the course of justice

idiomPart ofcourse

pervert the course of justice — idiom

1. To lie or act in a way that prevents the police or court from finding the truth

1.idiom
Definition

To lie or act in a way that prevents the police or court from finding the truth about a crime.

Example

The witness was accused of trying to pervert the course of justice.

Destroying evidence is a clear attempt to pervert the course of justice.