An alternative or archaic form of discolor; to cause to lose or change color.
From discolor with the addition of the suffix -ate, which is used to form verbs in English. This form is less common in modern usage but was used historically alongside discolor.
English often has multiple ways to say the same thing—discolor and discolorate both work, but we usually prefer the shorter form. It's like how we say 'help' instead of 'helpate' (which isn't even a word!)
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