rarefied
🇺🇸
/ˈrerɪfaɪd/
🇬🇧
/ˈreərɪfaɪd/
only understood or enjoyed by a small number of people with special knowledge or interests
The rarefied world of professional ballet is not for everyone.
having less oxygen than normal
The rarefied air at the top of the mountain made it hard to breathe.