The story
- Proto-Indo-European*h₂ep
- Proto-Indo-European*h₂epó
- Proto-Hellenic*apó
- Ancient Greekᾰ̓πό (ăpó)
- Ancient Greekᾰ̓πο- (ăpo-)
- Englishapo-
- Ancient Greekμορφή (morphḗ)
- Englishapomorphy
- English todayapomorphic
Etymology from Wiktionary, CC BY-SA 4.0.