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1. a misguided or ignorant person who makes showy pretenses to knowledge or ability he or she does not possess, while advocating a doctrine of direct yet fruitless action in support of a cause

2. one who consistently advocates for a cause, but just as consistently changes the cause du jour in keeping with the latest fad
He brags about being an activist because he got 100 people to turn their Facebook pictures purple to protest famine in Somalia. But that's not gonna feed anyone.. and no one will be surprised when next week he's not making a bit of difference about a whole new cause. These quactivists just get off on their own do-gooderness even though they don't do any good!
by advokaitor February 06, 2012
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