Nemisword Share definition Flag A word which, no matter how often you use it, you always spell incorrectly. "Hey Mark, you spelt 'Unfourtunately' wrong in this email""Dammit! That's my arch Nemisword!" Nemisword by communitycervix February 4, 2010 0 0 Get merch Get the Nemisword mug. Buy Now — $32.95 See more merch