eratard Share definition Flag a word that comes from combining era and retard and means to do something so ignorant that it could be the dumbest or stupidest thing done in the last 50+ years John- "omg i just rode my bike into a brick wall" Jared- "you eratard" eratard by jayred May 21, 2008 0 0 Get merch Get the eratard mug. Buy Now — $32.95 See more merch