step-great-great-grandchild Share definition Flag 1- Step-great-grandchild's child. 2- Great-grandchild's stepchild. My step-great-great-grandchild is a good person. step-great-great-grandchild by User655 July 25, 2021 0 0 Get merch Get the step-great-great-grandchild mug. Buy Now — $32.95 See more merch