- rare, rarefied, rarified - having low density; "rare gasses"; "lightheaded from the rarefied mountain air"
 Antonym: thick (indirect, via thin)
 
- rarefied, rarified - reserved for an elite group
 Antonym: unreserved (indirect, via reserved)
 
- exalted, high-flown, high-minded, lofty, rarefied, rarified, idealistic, noble-minded - 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"
 Antonym: ignoble (indirect, via noble)
 
- rarefy - lessen the density or solidity of; "The bones are rarefied"
 --1 is one way to change, alter, modify
 
 Sample sentence:Derived form: noun rarefaction1 
 Something ----s something
 
- rarefy, sublimate, subtilize - make more subtle or refined
 --2 is one way to change, alter, modify
 Sample sentence:
 Somebody ----s something
 
- rarefy, attenuate - weaken the consistency of (a chemical substance)
 --3 is one way to weaken
 
 Sample sentences:Derived form: noun rarefaction1 
 Somebody ----s something
 Something ----s something