rarefied - definition and synonyms

adjective 

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/ˈreərɪfaɪd/
  1. 1
    intended for a small group of people who are very intelligent, rich, powerful etc. This word often shows that you think people like this believe they are better than ordinary people

    a glimpse into the rarefied world of the super-rich

  2. 2
    rarefied air does not contain much oxygen