| Adj. | 1. | rarefied - having low density; "rare gasses"; "lightheaded from the rarefied mountain air" |
| 2. | rarefied - reserved for an elite group Synonyms: rarified | |
| 3. | 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" |