Serpent Tongued Share definition Flag A sly, deceitful way of speaking akin to that of the devil. Hillary is a Serpent Tongued liar. She'll say anything to get people to follow her. Serpent Tongued by havoc777 September 6, 2016 0 0 Get merch Get the Serpent Tongued mug. Buy Now — $32.95 See more merch