Where does “flīes” come from?

flīes (Old English) comes from Proto-West Germanic fleus, from Proto-Germanic fleusaz, from Proto-Indo-European plews-, from Proto-Indo-European plúsis — flea.

Ancestry of “flīes”, step by step

StepLanguageWordMeaning
1Proto-West Germanicfleusfleece
2Proto-Germanicfleusaz—
3Proto-Indo-Europeanplews-to pluck, a feather, fleece; to pull out, pluck
4Proto-Indo-Europeanplúsisflea

Words derived from “flīes”

Every word from Proto-Indo-European plúsis →Every word from Proto-Indo-European plews- →Every word from Proto-Germanic fleusaz →