Definitions for "rarefied"
Keywords:  lofty, exalted, flown, franks, argue
of high moral 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"
having low density; "rare gasses"; "lightheaded from the rarefied mountain air"
Keywords:  elite, reserved, group
reserved for an elite group