Where does “وفاداری” come from?

وفاداری (Persian) comes from Persian ـی, from Middle Persian -yk', from Old Persian -𐎡𐎣, from Proto-Indo-Iranian -kas, from Proto-Indo-European -ḱos — -y, -ic.

وفاداری (Persian): loyalty; troth (to a promise or a lover)

Definitions

loyalty; troth (to a promise or a lover)

Ancestry of “وفاداری”, step by step

وفاداری traces back through two separate lines of ancestry.

via Persian ـی

Step	Language	Word	Meaning
1	Persian	ـی	Forms nouns or adjectives from nouns; Forms...
2	Middle Persian	-yk'	—
3	Old Persian	-𐎡𐎣	of, pertaining to, belonging to, related to
4	Proto-Indo-Iranian	-kas	Creates deadjectival and desubstantival...
5	Proto-Indo-European	-ḱos	-y, -ic

via Persian وفادار

Step	Language	Word	Meaning
1	Persian	وفادار	loyal person
2	Persian	وفا	loyalty
3	Arabic	وَفَاء	loyalty
4	Classical Persian	ـدار	—

Every word from Proto-Indo-European -ḱos →Every word from Middle Persian -yk' →Every word from Persian ـی →