decolourize
1. [ verb ] (color) remove color from
Synonyms: bleach decolorize decolourise discolorize decolorise decolour decolor discolorise discolourise bleach_out
Examples:

"The sun bleached the red shirt"

Related terms: discolor bleach
Similar spelling:   decolorize
  decolour
  decolourise
  decolorise