The story
- Proto-Indo-European*h₂ewis
- Proto-Indo-European*dʰeh₁-
- Proto-Italic*awizdiō
- Latinaudi(ō)
- Englishaudio-
- Proto-Indo-European*bʰeh₂ǵosder.?
- Proto-Indo-European*bʰeh₂g-der.?
- Proto-Germanic*bōks
- Proto-West Germanic*bōk
- Old Englishbōc
- Middle Englishbok
- Englishbook
- English todayaudiobook
Etymology from Wiktionary, CC BY-SA 4.0.