pervert

Universal Words verb, noun verb [VN] 1 to change a system, process, etc. in a bad way so that it is not what it used to be or what it should be: Some scientific discoveries have been perverted to create weapons of destruction. 2 to affect sb in a way that makes them act or think in an immoral or unacceptable way SYNCORRUPT: Some people believe that television can pervert the minds of children. IDIOMS pervert the course of justice (law) to tell a lie or to do sth in order to prevent the police, etc. from finding out the truth about a crime noun a person whose sexual behaviour is not thought to be normal or acceptable by most people: a sexual pervert