rarefied

Meanings

• lessen the density or solidity of
  • "The bones are rarefied"
• make more subtle or refined
• weaken the consistency of (a chemical substance)
• having low density
  • "lightheaded from the rarefied mountain air"
• of high moral or intellectual value; elevated in nature or style; ; - Oliver Franks

Synonyms

attenuate, elevated, exalted, grand, high-flown, high-minded, idealistic, lofty, noble-minded, rare, rarefy, rarified, sublimate, sublime, subtilize