Where does “filial” come from?
filial (Crimean Tatar) comes from German Filiale, from Latin fīliālis, from Latin fīlius, from Old Latin fīlios, from Proto-Indo-European dʰeh₁y-li-os, from Proto-Indo-European dʰeh₁(y)- — to suckle, nurse.
filial (Crimean Tatar): filial, branch
Ancestry of “filial”, step by step