by 1948, originally with reference to racial beliefs and in most cases with white, from supremacy + -ist. Compare supremist. Related: Supremacism.
Entries linking to supremacist
supremacy n.
1540s, from supreme + -acy, or from Latin supremitatem (nominative supremitas). Supremity in same sense is from 1530s.
-ist
word-forming element meaning "one who does or makes," also used to indicate adherence to a certain doctrine or custom, from French -iste and directly from Latin -ista (source also of Spanish, Portuguese, Italian -ista), from Greek agent-noun ending -istes, which is from -is-, ending of the stem of verbs in -izein, + agential suffix -tes.
Variant -ister (as in chorister, barrister) is from Old French -istre, on false analogy of ministre. Variant -ista is from Spanish, popularized in American English 1970s by names of Latin-American revolutionary movements.
supremist n.
1640s, "one who holds supreme authority," from supreme + -ist.