The story
- Proto-Indo-European*h₁nómn̥
- Proto-Hellenic*ónomə
- Ancient Greekὄνομᾰ (ónomă)
- Ancient Greekὀνομάζω (onomázō)
- Ancient Greekὀνομᾰστῐκός (onomăstĭkós)
- English todayonomastic
Borrowed from Ancient Greek ὀνομᾰστῐκός (onomăstĭkós).
Etymology from Wiktionary, CC BY-SA 4.0.