Chreaster
n.— «I mentioned to some folks in our congregation at Eastlake about the creation of the word “Chreasters” and they got a kick out of it. If you’re curious, it’s a new word for folks who go to church on Christmas Eve and Easter.» —“Exciting concerts on tap starting tonight” by George McHendry Daily Camera (Boulder, Colorado) Apr. 22, 2006. (source: Double-Tongued Dictionary)