Noun lightening has 2 senses
  1. lightening - descent of the uterus into the pelvic cavity that occurs late in pregnancy; the fetus is said to have dropped
    --1 is a kind of
    descent
  2. whitening, lightening - changing to a lighter color
    --2 is a kind of change of color
    --2 has particulars: bleach
,Verb lighten has 5 senses
  1. lighten, buoy up - make more cheerful
    --1 is one way to cheer
    Antonyms: weigh down, weigh on
    Sample sentences:
    Somebody ----s somebody
    Something ----s somebody
  2. lighten, buoy up - make more cheerful
    --2 is one way to cheer, cheer up, chirk up
    Sample sentences:
    Somebody ----s somebody
    Something ----s somebody
  3. brighten, lighten up, lighten - make lighter or brighter; "The paint will brighten the room"
    --3 is one way to change, alter, modify
    Sample sentences:
    Somebody ----s something
    Something ----s something
  4. brighten, lighten - become brighter; "The sky brightened"
    --4 is one way to change
    Sample sentence:
    Something ----s
  5. lighten, lighten up - become lighter; "The room lightened up"
    --5 is one way to change
    Sample sentence:
    Something ----s
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