double edged liar Share definition Flag 1. A person who covers a lie with another lie. 2. A person with a never ending trail of lies. I caught you in a lie and now your trying to lie your way out of it! You're nothing but a double edged liar. double edged liar by barrywixon August 14, 2006 0 0 Get merch Get the double edged liar mug. Buy Now — $32.95 See more merch