The story
- Proto-Indo-European*deḱ-
- Proto-Indo-European*doḱ-éye-ti
- Proto-Italic*dokejō
- Proto-Italic*dokeō
- Ancient Greekδιδάσκω (didáskō)
- Latindoceō
- Latindoctor
- Old Frenchdoctur
- Anglo-Normandoctour
- Middle Englishdoctour
- Englishdoctor
- English todaydoctorer
Etymology from Wiktionary, CC BY-SA 4.0.