Verb rarefy has 3 senses
  1. rarefy - lessen the density or solidity of; "The bones are rarefied"
    --1 is one way to
    change, alter, modify
    Derived form: noun rarefaction1
    Sample sentence:
    Something ----s something
  2. rarefy, sublimate, subtilize - make more subtle or refined
    --2 is one way to change, alter, modify
    Sample sentence:
    Somebody ----s something
  3. rarefy, attenuate - weaken the consistency of (a chemical substance)
    --3 is one way to weaken
    Derived form: noun rarefaction1
    Sample sentences:
    Somebody ----s something
    Something ----s something
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