Definition of ethnomaniac in US English:

ethnomaniac

noun

  • A person obsessed with or passionate about the importance of national identity, or (now more usually) of ethnic identity or purity.

Origin

Mid 19th century; earliest use found in The Times. From ethno- + -maniac.

Pronunciation

ethnomaniac

/ˌɛθnə(ʊ)ˈmeɪnɪak/