Where does “ⲕⲩⲣⲓⲁⲕⲟⲥ” come from?

ⲕⲩⲣⲓⲁⲕⲟⲥ (Coptic) comes from Ancient Greek Κυριακός, from Ancient Greek -ακός, from Ancient Greek -κός, from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “ⲕⲩⲣⲓⲁⲕⲟⲥ”, step by step

StepLanguageWordMeaning
1Ancient GreekΚυριακόςof the Lord
2Ancient Greek-ακός-ic
3Ancient Greek-κόςforms adjectives with the sense of 'of or...
4Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Indo-European -ḱos →Every word from Ancient Greek -κός →Every word from Ancient Greek -ακός →