(Adjective) extremely wicked or criminal-like
The hackers deployed their nefarious virus which made use of new technology to hack bank accounts and transfer money anonymously.
The image below portrays a nefarious hacker who is wicked and has the dark intent of stealing money.
Although racism and sexism are no longer nefarious realities in this world, traces of prejudice in favor of certain groups can still be seen in the 21st century.
The image below is of an African American girl who has fallen victim to the evil occurrences of racism in the 21st century.
In the video displayed above, a white woman displays nefarious racism towards a black woman on the streets just because of race. The word nefarious can be displayed by this video because the white woman's words are extremely wicked and have dark intent. They negatively talk about another person and that is a very evil thing to do, especially in front of the person.