The story
- Proto-Indo-European*h₂ewis
- Proto-Indo-European*dʰeh₁-
- Proto-Italic*awizdiō
- Latinaudi(ō)
- Englishaudio-
- Proto-Indo-European*wekʷ-
- Proto-Indo-European*wṓkʷs
- Proto-Italic*wōks
- Latinvōx
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Latinvōcālis
- Middle Englishvocal
- Englishvocal
- English todayaudiovocal
Etymology from Wiktionary, CC BY-SA 4.0.