Where does “سیاهی” come from?

سیاهی (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.

سیاهی (Persian): blackness, darkness, ink

Definitions

blackness, darkness, ink

Ancestry of “سیاهی”, step by step

سیاهی 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 سیاه

Step	Language	Word	Meaning
1	Persian	سیاه	black; dark-skinned
2	Persian	ـه	Forms the past participle from the past stem
3	Proto-Iranian	-akah	Creates deadjectival and desubstantival...
4	Proto-Iranian	-kah	—
5	Proto-Austronesian	ka	if

Words derived from “سیاهی”

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