Sheep-idity Share definition Flag The wilful abdication of reasonable thought in favour of the perpetuation of indoctrinated dogma. The denial of fossil evidence as an indicator of the earth's true age is a shining example of one's sheep-idity. Sheep-idity by island thinker February 24, 2010 0 0 Get merch Get the Sheep-idity mug. Buy Now — $32.95 See more merch