Justibuy Share definition Flag Fusion of the words buy and justify. Used when even though something is expensive you need it so you can justibuy it. I just bought some new shoes, there is no way I can justibuy this handbag Justibuy by SophieDP November 20, 2011 0 0 Get merch Get the Justibuy mug. Buy Now — $32.95 See more merch