antiposeur 

Someone so consumed with the desire to not be labeled as a poseur/poser that they act differently than is true to themselves so they can avoid labels.

He seems a little too eccentric, and he seems kinda fake. Probably an antiposeur

antiposeur by Aokun January 22, 2004

antipseudoantidisestablishmentarianism 

being against those who display fake feelings for the opposition to the withdrawal of state support or recognition from an established church

"He's so pseudonic... he makes me support antipseudoantidisestablishmentarianism."
"For real."

antipseudoantidisestablishmentarianism by robotdinosaur January 8, 2010

antipower

Opposite of superpower

That poor boy only has antipower, no superpower.

antipower by K.two.twentyseven.AM July 24, 2014