From the root "Deo" (having to do with God, i.e. diety) and "Phobia": an exaggerated usually inexplicable and illogical fear of a particular object, class of objects, or situation.
A word created by John Cooper of the band Skillet, first used in the song "Savior" off of Skillet's 2003 CD, "Collide"
The condition or state of having an irrational fear of, aversion to, or discrimination against the one true God and more specifically the Judeo-Christian FAITH (NOT just "religion").
It's time to redefine your Diephobic mind. Don't hesitate, there's no escape
the secrets on the inside.- Skillet - Savior Lyrics
An adjective given when someone has mistakenly made themselves look dumb by saying something abnormally stupid in a conversation. Someone who disrupted, or killed, the conversation with a bad joke or comment.