Where does “fi” come from?

fi (Réunion Creole French) comes from French fille, from Middle French fille, from Old French fille, from Latin fīlia, from Latin fīlius, from Old Latin fīlios, from Proto-Indo-European dʰeh₁y-li-os, from Proto-Indo-European dʰeh₁(y)- — to suckle, nurse.

fi (Réunion Creole French): girl

Definitions

girl

Ancestry of “fi”, step by step

Step	Language	Word	Meaning
1	French	fille	girl; daughter; prostitute, wench
2	Middle French	fille	daughter; girl
3	Old French	fille	daughter; girl
4	Latin	fīlia	daughter
5	Latin	fīlius	a son
6	Old Latin	fīlios	—
7	Proto-Indo-European	dʰeh₁y-li-os	sucker
8	Proto-Indo-European	dʰeh₁(y)-	to suckle, nurse

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