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"
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.