rarefied
[adjective]
Synonyms: exalted, elevated, high, lofty, noble, spiritual, sublime

[TahlilGaran] English Synonym Dictionary ▲

rar‧e‧fied /ˈreərəfaɪd, ˈreərɪfaɪd $ ˈrer-/ adjective [usually before noun]

1. a rarefied place, organization, or type of activity is only available to or understood by a small group of people – used to show disapproval:
the rarefied atmosphere of academia

2. rarefied air is the air in high places, which has less oxygen than usual

[TahlilGaran] Dictionary of Contemporary English ▲