miscegenist
/mɪˈsɛdʒɪnɪst/noun
A person who advocates or practises miscegenation; = miscegenationist.
adjective
Advocating or favouring miscegenation; = miscegenationist. Also: concerned with or relating to marriage between people of different races.
Origin
Mid 19th century; earliest use found in Moncure Conway (1832–1907), social reformer and ethical preacher. From miscegen- + -ist; compare -genist.