illtwitterate Share definition Flag A term used to define a person who, for whatever reason, cannot figure out how to use Twitter. I sent a direct message to my friend instead of replying to him because apparently I'm illtwitterate. illtwitterate by Wildcat 91.9 Sports Guy March 27, 2009 0 0 Get merch Get the illtwitterate mug. Buy Now — $32.95 See more merch