blemish
noun
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a mark or flaw that spoils the appearance of something (especially on a person's body)“a facial blemish”mardefect
verb
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to add a flaw or blemish to“I blemished the jeans to fit the current trend.”flaw
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to mar or impair with a flaw“Their faces were blemished.”spot
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to mar or spoil the appearance of“The snag blemished the smoothness of the garment.”defacedisfigure