German words and phrases that appear in English texts tend to refer to literary and philosophical ideas. Here’s a
short list:

  • Doppelgänger: a look-alike, double, or alter ego (literally “double goer”)
  • Flak: heavy criticism or opposition (from the bursting shells fired by FLiegerAbwehrKanone, an antiaircraft gun)
  • Schadenfreude: joy over someone’s misfortunes (literally “damage joy”)
  • Wunderkind: a child prodigy (literally “miracle child”)