Where does “voys” come from?

voys (Old French) comes from Latin vox, from Proto-Italic wōks, from Proto-Indo-European wṓkʷs, from Proto-Indo-European wekʷ- — to speak, to sound out.

Ancestry of “voys”, step by step

StepLanguageWordMeaning
1Latinvoxvoice
2Proto-Italicwōksvoice
3Proto-Indo-Europeanwṓkʷsvoice, speech
4Proto-Indo-Europeanwekʷ-to speak, to sound out
Every word from Proto-Indo-European wekʷ- →Every word from Proto-Indo-European wṓkʷs →Every word from Proto-Italic wōks →