Someone who engages in infidelity after the consumption of wine. Characteristics include: marital disloyalty, general acts of belligerence, sacrilegious declarations, and aroused sexual prowess (often resulting in the repulsion of strangers).
Steve polished off a bottle of white Zin and proceeded to behave like a complete zinfidel, hitting on every woman in sight and dry-humping a tree after failing miserably in his attempts to woo any member of the female population.
by Ziggy Zinfandel II January 29, 2009
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