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English definition of “discolour”

discolour

verb [I or T] UK (US discolor)     /dɪˈskʌl.ər/ US  //
to (cause something to) change from the original colour and therefore to look unpleasant: The coal fire had discoloured the paintwork.Colour - general wordsPale and colourless and causing colour to fade discoloration     /dɪˌskʌl.əˈreɪ.ʃən/ noun [C or U] Colour - general wordsPale and colourless and causing colour to fade
(Definition of discolour verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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