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1.
Someone who hides behind a smile, when all they want to do is hide and/or die. ( There is so many, they actually made a word for it.)
She's eccedentesiast after she had to break up with Dylan...
by there are eccedentesiast girls March 17, 2011
 
2.
someone who fakes a smile
Carla's been an eccedentesiast since the break up. "/
by donttellmewhattodoxx February 22, 2011
 
3.
A person who fakes a smile.
"Quit with that eccedentesiast."
by iloveyooh! October 22, 2014