Top Definition
a person who will shadily try to pull a fast one on you. Closely related to scum-bag or simply scum. They hide shadily in the background until the right moment and take advantage of you.
Bernie Madoff was an excellent unscumpter with his ponzi scheme.
by YoSoyTuPAPA973 August 12, 2010

The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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