Where does “flatteren” come from?

flatteren (Middle English) comes from Old English floterian, from Old English flotian, from Frankish flotōn, from Proto-Germanic flutōną, from Proto-Indo-European plewd-, from Proto-Indo-European plew- — to fly, flow, run.

Ancestry of “flatteren”, step by step

StepLanguageWordMeaning
1Old Englishfloterianto float
2Old Englishflotianto float
3Frankishflotōnto float, swim
4Proto-Germanicflutōnąto float; drift
5Proto-Indo-Europeanplewd-to fly, flow, run
6Proto-Indo-Europeanplew-to fly, flow, run

Words derived from “flatteren

Every word from Proto-Indo-European plew-Every word from Proto-Indo-European plewd-Every word from Proto-Germanic flutōną