eeyuck Share definition Flag a term used when expressing utter disgust. The Ee is often expanded or high pitched. "Eeyuck, that kid is so foul" "Eeyuck, what a sloppy sid" "Eeyuck!!!" eeyuck by lizzieei December 9, 2008 0 0 Get merch Get the eeyuck mug. Buy Now — $32.95 See more merch