Where does “fiastru” come from?

fiastru (Romanian) comes from Late Latin filiaster, from Latin fīlius, from Old Latin fīlios, from Proto-Indo-European dʰeh₁y-li-os, from Proto-Indo-European dʰeh₁(y)- — to suckle, nurse.

fiastru (Romanian): stepson

Definitions

stepson

Ancestry of “fiastru”, step by step

Step	Language	Word	Meaning
1	Late Latin	filiaster	stepson; son-in-law; nephew, sister's son
2	Latin	fīlius	—
3	Old Latin	fīlios	—
4	Proto-Indo-European	dʰeh₁y-li-os	sucker
5	Proto-Indo-European	dʰeh₁(y)-	to suckle, nurse

Every word from Proto-Indo-European dʰeh₁(y)- →

fiastru — Etymology, Origin & Word History | Etymology Explorer