Where does “we(k)speros” come from?

we(k)speros (Proto-Italic) comes from Proto-Indo-European wek(ʷ)speros, from Proto-Indo-European we-.

Ancestry of “we(k)speros”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanwek(ʷ)sperosevening
2Proto-Indo-Europeanwe-—
Every word from Proto-Indo-European we- →Every word from Proto-Indo-European wek(ʷ)speros →