fraternal

The story

1. Latin · derived fromfrāternus“of or pertaining to a brother, fraternal”
2. Medieval Latin · derived fromfrāternālis“fraternal”
3. Middle French · borrowed fromfraternel
4. English todayfraternal

PIE word *bʰréh₂tēr Borrowed from Middle French fraternel, from Medieval Latin frāternālis (“fraternal”), from Latin frāternus (“of or pertaining to a brother, fraternal”), from frāter (“brother”).