The story
- Proto-Indo-European*h₂ent-
- Proto-Indo-European*h₂énts?
- Proto-Indo-European*h₂m̥bʰí
- Proto-Italic*amβi-
- Latinambi-
- Proto-Indo-European*h₂eǵ-
- Proto-Indo-European*h₂éǵeti
- Proto-Italic*agō
- Latinagō
- Latinambig(ō)
- Latinambiguu
- Englishambigu(ous)
- Proto-Indo-European*dʰeh₁-
- Proto-Italic*θakos
- English todayambiguify
From ambigu(ous) + -ify.
Etymology from Wiktionary, CC BY-SA 4.0.