西せい洋ようかぶれ

noun

Western affectations; excessively westernized person; wannabe Westerner

Derogatory term for someone overly infatuated with Western culture, often implying superficial imitation. Can refer to the person or their behavior.

• 彼かれは留りゅう学がくから帰かえってきてすっかり西せい洋ようかぶれになった。

  He came back from studying abroad completely westernized.

• あの西せい洋ようかぶれのファッションはちょっとやりすぎだと思おもう。

  I think that wannabe Westerner's fashion is a bit over the top.