UK and ANZ, [US and ANZ] discolor [verb] - to (cause to) change from the original colour and therefore to look unpleasantThe covers of the books had discoloured from their exposure to the sun. [I]My new blue shirt discoloured the rest of my clothes in the wash. [T]
DISCOLOUR
Meaning of DISCOLOUR in English
Cambridge English vocab. Кембриджский английский словарь. 2012