Verb fall away has 2 senses
  1. slip, drop off, drop away, fall away - get worse; "My grades are slipping"
    --1 is one way to worsen, decline
    Sample sentences:
    Something ----s
    Somebody ----s
  2. fall off, fall away - diminish in size or intensity
    --2 is one way to disappear, vanish, go away
    Sample sentence:
    Something ----s
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