Top Definition
A complete, utter, wholly, altogether, entirely, unreservedly useless moron.

A combination of a "Dumb fuck", a "Nitwit" a "Retard" and an "Idiot".
Person A: "I think Obama is a great president!"

Person B: "Wow, what a moonbat"

Everyone with a brain: "No, that's a fuckwitardiot"
by NorthBridge May 17, 2010
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