Filial \Fil"ial\, a. [L. filialis, fr. filius son, filia daughter; akin to e. female, feminine. Cf. Fitz.]

1. Of or pertaining to a son or daughter; becoming to a child in relation to his parents; as, filial obedience.

2. Bearing the relation of a child.

And thus the filial Godhead answering spoke. --Milton.

Source: Webster's Revised Unabridged Dictionary (1913)