fraternal: [15] Etymologically as well as semantically, fraternal is ‘brotherly’. It comes from frāternālis, a medieval Latin derivative of Latin frāter ‘brother’. This goes back to the same prehistoric Indo-European source, *bhrāter, as produced English brother. The Latin accusative from, frātrem, produced French frère ‘brother’, from which English gets friar [13]. => brother, friar, pal