Jerry Coyne has a discussion of Dennetts notion of deepity on his blog

Dan Dennett talked about interviews with active priests and ministers who are atheists, and also mounted a hilarious attack on theologians like Karen Armstrong, who mouth pious nonsense like, “God is the God behind God.” Dennett calls this kind of language a “deepity”: a statement that has two meanings, one of which is true but superficial, the other which sounds profound but is meaningless. His exemplar of a deepity is the statement “Love is just a word.” True, it’s a word like “cheeseburger,” but the supposed deeper sense is wrong: love is an emotion, a feeling, a condition, and not just a word in the dictionary. He gave several examples of other deepities from academic theologians; when you see these things laid out — ripped from their texts — in a Powerpoint slide, they make you realize how truly fatuous are the lucubrations of people like Armstrong, Eagleton, and Haught. Sarcasm will be the best weapon against this stuff.