Racist (noun)

1. A person who believes in the superiority of one race over another and discriminates against people of other races.
2. A person who shows or feels discrimination or prejudice against people of other races, or who advocates the belief that some races are inherently superior to others.

Origin:

From the french word raciste meaning "of or relating to race or racism".

Examples:

1. He was fired for making racist comments.
2. The organization is dedicated to fighting racism.
3. The racist policies of the government were protested.
4. The racist behavior of the employee was not tolerated.
5. The racist attitudes of the society were challenged.