English
Westsplainer
Blend of West + explainer, or Westsplaining + -er
Proto-Indo-European *wek⁽ʷ⁾speros ‘evening’
…
Proto-Germanic *westrą
Proto-West Germanic *westr ‘western’
Old English west
Middle English west
English West
Today it means
noun a person who condescendingly explains something as a Westerner, especially sociopolitical views of Central and Eastern Europe and its historical and current relations with the Soviet Union and Russia.
Language periods are conventional ranges, not dates for this word.
Etymograph / Westsplainer