"rarefied" in the verb sense
1. rarefy
lessen the density or solidity of
"The bones are rarefied"
2. rarefy, sublimate, subtilize
make more subtle or refined
3. rarefy, attenuate
weaken the consistency of (a chemical substance)
"rarefied" in the adjective sense
1. rare, rarefied, rarified
having low density
"rare gasses"
"lightheaded from the rarefied mountain air"
2. exalted, elevated, sublime, grand, 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"
"a grand purpose"
Source: WordNet® (An amazing lexical database of English)
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