having low density; rare gasses; lightheaded from the rarefied mountain air

[ Syn: rare , rarefied ]

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; a grand purpose

[ Syn: exalted , elevated , sublime , grand , high-flown , high-minded , lofty , rarefied , idealistic , noble-minded ]