If someone perverts the course of justice, they deliberately do something that will make it difficult to discover who really committed a particular crime, for example, destroying evidence or lying to the police. He was charged with conspiring to pervert the course of justice
To turn from truth, rectitude, or propriety; to divert from a right use, end, or way; to lead astray; to corrupt; also, to misapply; to misinterpret designedly; as, to pervert one's words
a person whose behavior deviates from what is acceptable especially in sexual behavior change the inherent purpose or function of something; "Don't abuse the system"; "The director of the factory misused the funds intended for the health care of his workers
disapproval If you say that someone is a pervert, you mean that you consider their behaviour, especially their sexual behaviour, to be immoral or unacceptable. someone whose sexual behaviour is considered unnatural and unacceptable
{i} deviant, one who has abnormal qualities, one who has aberrant qualities or behaviors; person whose sexual conduct is thought unusual and unpleasant by most people
change the inherent purpose or function of something; "Don't abuse the system"; "The director of the factory misused the funds intended for the health care of his workers"