1. (noun) One who has never read/objects to/is not completely obesessed with Harry Potter or anything associated with the series

2. (adj) describes a person/idea that is against Harry Potter or the series.
Person 1: Hey do you wanna go to see the new Harry Potter movie with me?

Person 2: No thanks, I'm a faithful Potterstant.

The idea that Hogwarts is satanic is completely potterstant!
by north_wind January 2, 2011
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