Where does “levis” come from?

levis (Latin) comes from Proto-Italic leɣʷis, from Proto-Indo-European h₁léngʰus, from Proto-Indo-European h₁lengʷʰ- — light.

Ancestry of “levis”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	leɣʷis	—
2	Proto-Indo-European	h₁léngʰus	lightweight
3	Proto-Indo-European	h₁lengʷʰ-	light

levis — Etymology, Origin & Word History | Etymology Explorer