Where does “flou” come from?

flou (Middle French) comes from Old French flou, from Frankish hlāo, from Proto-Germanic hlēwaz, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

Ancestry of “flou”, step by step

StepLanguageWordMeaning
1Old Frenchfloutired, weary
2Frankishhlāolukewarm, tepid, mild
3Proto-Germanichlēwazlukewarm
4Proto-Indo-Europeanḱlew-to hear
5Proto-Indo-Europeanḱel-to cover; to incline

Words derived from “flou”

Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱlew- →Every word from Proto-Germanic hlēwaz →