Rarefied
adjective
of high moral or intellectual value; elevated in nature or style; ; - Oliver Franks
“an exalted ideal”
Similar: exalted, elevated, sublime, grand, lofty, rarified
verb
weaken the consistency of (a chemical substance)
Similar: rarefy, attenuate
verb
lessen the density or solidity of
“The bones are rarefied”
Similar: rarefy
verb
make more subtle or refined
Similar: rarefy, sublimate, subtilize