racist (n.) Look up racist at Dictionary.com
1932 as a noun, from race (n.2); racism is in continual use from 1936 (from French racisme, 1935), originally in the context of Nazi theories. But they replaced earlier words, racialism (1871) and racialist (1917), both often used early 20c. in a British or South African context. There are isolated uses of racism from c. 1900. In the U.S., race hatred, race prejudice had been used, and, especially in 19c. political contexts, negrophobia. As an adjective from 1938.