Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Italic *super Proto-Italic *superos Proto-Italic *superād Old Latin suprād Latin suprā Latin supra-lbor. English supra- Late Latin rēn Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Late Latin -ālis Late Latin rēnālislbor. English renal English suprarenal From supra- + renal.