Where does “aada” come from?

aada (Ingrian) comes from Russian ад, from Old East Slavic адъ, from Old Church Slavonic адъ, from Ancient Greek ᾍδης, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

Ancestry of “aada”, step by step

Step	Language	Word	Meaning
1	Russian	ад	Hades; hell
2	Old East Slavic	адъ	hell
3	Old Church Slavonic	адъ	hell
4	Ancient Greek	ᾍδης	Hades (Greek god)
5	Proto-Indo-European	n̥-	not, un-
6	Proto-Indo-European	ne	not

Every word from Proto-Indo-European ne →Every word from Proto-Indo-European n̥- →Every word from Ancient Greek ᾍδης →