N1C4R Share definition Flag Negative-first-cousin-four-times-removed: great-great-grandparent or great-great-grandchild. My great-great-grandparent is my N1C4R in theory and my great-great-grandchild is also my N1C4R in theory. N1C4R by KNN128 May 21, 2021 0 0 Get merch Get the N1C4R mug. Buy Now — $32.95 See more merch