unsquarerootable Share definition Flag a number that you cannot find a square root for Jack: "What's the square root of 2 + or - 79?" Jill: "There isn't one, it's unsquarerootable." unsquarerootable by mthgk January 22, 2011 0 0 Get merch Get the unsquarerootable mug. Buy Now — $32.95 See more merch