The story
- Proto-Indo-European*wekʷ-
- Proto-Indo-European*wṓkʷs
- Proto-Italic*wōks
- Latinvōx
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Latinvōcālis
- Old Frenchvoyeul
- Old Frenchvoue
- Middle Englishvowel
- Englishvowel
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- English todayvowelless
Etymology from Wiktionary, CC BY-SA 4.0.