1. (adj)rare, rarefied, rarified having low density "rare gasses"; "lightheaded from the rarefied mountain air"
2. (adj)exalted, elevated, sublime, grand, high-flown, high-minded, lofty, rarefied, rarified, idealistic, noble-minded of highmoral or intellectual value; elevated in nature or style "an exalted ideal"; "argue in terms of high-flown ideals"- Oliver Franks; "a noble and lofty concept"; "a grand purpose"
Definition of 'rarefied':
