Top Definition
A married male or female who is having a fling or an affair with only one individual.
Joe is a 'monogamous cheater'. He's been banging his best friend's wife for over a year now.
by BigBenW50 January 29, 2008

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

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