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lighten

transitive verb

  1. to make light or bright; illuminate
  2. to make light or pale
  3. to cause to flash in or as in lightning: with out or forth
  4. Archaic to give knowledge to; enlighten

intransitive verb

  1. to become light; grow brighter
  2. to shine brightly; flash
  3. to give off flashes of lightning

Related Forms:

transitive verb

    1. to make lighter in weight
    2. to make less heavy; reduce the load of
  1. to make less severe, harsh, or troublesome
  2. to make more cheerful; gladden

intransitive verb

  1. to become lighter in weight
  2. to become more cheerful

Related Forms:

See lighten in American Heritage Dictionary 4

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