The story
- Ancient GreekΚελτός (Keltós)
- Ancient GreekἼβηρ (Íbēr)
- Ancient GreekΚελτίβηρ (Keltíbēr)
- LatinCeltibēr
- LatinCeltibēria
- English todayCeltiberia
Borrowed from Latin Celtibēria, from Celtibēr + -ia (suffix forming country names).
Etymology from Wiktionary, CC BY-SA 4.0.