Where does “afillar” come from?

afillar (Galician) comes from Galician fillo, from Old Portuguese filho, from Latin fīlius, from Old Latin fīlios, from Proto-Indo-European dʰeh₁y-li-os, from Proto-Indo-European dʰeh₁(y)- — to suckle, nurse.

afillar (Galician): to adopt or foster (children)

Definitions

to adopt or foster (children)

Ancestry of “afillar”, step by step

afillar traces back through two separate lines of ancestry.

via Galician fillo

Step	Language	Word	Meaning
1	Galician	fillo	son; children; scion
2	Old Portuguese	filho	—
3	Latin	fīlius	a son
4	Old Latin	fīlios	—
5	Proto-Indo-European	dʰeh₁y-li-os	sucker
6	Proto-Indo-European	dʰeh₁(y)-	to suckle, nurse

via Late Latin adfiliare

Step	Language	Word	Meaning
1	Late Latin	adfiliare	—
2	Latin	Ad	toward, to
3	Latin	illic	he, she, it, yonder, that, overthere; in that...
4	Latin	ille	that; those; "; demonstrative pronoun "; that...
5	Latin	olle	Archaic form of ille
6	Proto-Italic	*olnos	that

Every word from Proto-Indo-European dʰeh₁(y)- →Every word from Proto-Indo-European dʰeh₁y-li-os →Every word from Old Latin fīlios →