Where does “ниоткуда” come from?

ниоткуда (Russian) comes from Russian ни, from Old East Slavic ни, from Proto-Slavic ni, from Proto-Indo-European nēy, from Proto-Slavic kogъda, from Proto-Slavic gъda.

ниоткуда (Russian): from nowhere

Definitions

from nowhere

Ancestry of “ниоткуда”, step by step

ниоткуда traces back through two separate lines of ancestry.

via Russian ни

Step	Language	Word	Meaning
1	Russian	ни	neither, nor; not a; whatever, however
2	Old East Slavic	ни	nor, neither
3	Proto-Slavic	ni	neither, nor; not even
4	Proto-Indo-European	nēy	—
5	Proto-Slavic	kogъda	when
6	Proto-Slavic	gъda	—

via Russian отку́да

Step	Language	Word	Meaning
1	Russian	отку́да	whence, from where
2	Russian	куда́	(to) where?
3	Old East Slavic	кѫда	where, whither
4	Proto-Slavic	kǫda	where, whither
5	Proto-Indo-European	kʷom-dʰ-	—

Every word from Proto-Slavic gъda →Every word from Proto-Slavic kogъda →Every word from Proto-Indo-European nēy →