Where does “flau” come from?

flau (Low German) comes from Dutch flauw, from Middle Dutch vlau, 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 “flau”, step by step

StepLanguageWordMeaning
1Dutchflauwboring, tasteless; languid, weak; vague, hazy
2Middle Dutchvlau—
3Old Frenchfloutired, weary
4Frankishhlāolukewarm, tepid, mild
5Proto-Germanichlēwazlukewarm
6Proto-Indo-Europeanḱlew-to hear
7Proto-Indo-Europeanḱel-to cover; to incline

Words derived from “flau”

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