Rarefied

1. adjective

   of high moral or intellectual value; elevated in nature or style; ; - Oliver Franks

   “an exalted ideal”

   Similar: exalted, elevated, sublime, grand, lofty, rarified

2. verb

   weaken the consistency of (a chemical substance)

   Similar: rarefy, attenuate

3. verb

   lessen the density or solidity of

   “The bones are rarefied”

   Similar: rarefy

4. verb

   make more subtle or refined

   Similar: rarefy, sublimate, subtilize