Middle English from Old French from Late Latin fīliālisfrom Latin fīliussondhē(i)- in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
From Middle French filial, from Latinfīliālis, from filius (“son”) / filia (“daughter”).
Filial Sentence Examples
In His sinless perfection and filial relation to God He is unique, and His works are congruous with His Person.
Filial piety influenced in a quite unusual degree his feelings and his action all life through.
If the adopted child failed to carry out the filial duty the contract was annulled in the law courts.
All the poet and all the man spoke out and stood evident in the perfervid patriotism, the filial devotion, the fatherly tenderness, the indignation and the pity, which here find alternate expression in passionate and familiar and majestic song.