rarefied

Etymology

adj

1. Distant from the lives and everyday concerns of ordinary people; esoteric, exclusive, select.
   Philosophical debates can be quite rarefied.
   One day, she had to present the children, dressing them formally and introducing them by their full titles, ahead of high tea with extended family. It had been a crash course into the rarefied world in which some Norland charges live. 2023-04-29, Lou Stoppard, “Inside the world of the elite nanny”, in FT Weekend
2. Elevated in style or nature, sublime; of high intellectual or moral value.
3. (of a gas etc.) Less dense than usual; thin.
   The air at high altitudes at the top of mountains is rarefied.

verb

1. simple past and past participle of rarefy