English to English

verb (v)

• turn white(verb.change)

  Example:
  This detergent will whiten your laundry.
  

  Synonym:
  white
  Antonym:
  black, blacken, melanise, melanize, nigrify
  

  source: wordnet30
• To grow white; to turn or become white or whiter; as, the hair whitens with age; the sea whitens with foam; the trees in spring whiten with blossoms.(verb)

  source: webster1913
• To make white; to bleach; to blanch; to whitewash; as, to whiten a wall; to whiten cloth.(verb)

  source: webster1913