Blab-aholic Share definition Flag Person who blabs about a secrect the second after they have heard it. It is a condition and therapy may be needed I stopped talking to him because he is a blab-aholic and told everyone. Blab-aholic by danadbug September 22, 2011 0 0 Get merch Get the Blab-aholic mug. Buy Now — $32.95 See more merch