Where does “sonderen” come from?

sonderen (Middle Dutch) comes from Middle French sonder, from Old French sonder, from Old French sonde, from Old English sund, from Old Norse sund, from Proto-Germanic sundą, from Proto-Germanic swimmaną, from Proto-Indo-European swem(bʰ)- — to bend, turn, swing; to be unsteady, move, swim.

Ancestry of “sonderen”, step by step

sonderen traces back through two separate lines of ancestry.

via Middle French sonder

StepLanguageWordMeaning
1Middle Frenchsonder—
2Old Frenchsonderto plumb
3Old Frenchsondesounding line
4Old Englishsundswimming; sea, water
5Old Norsesundswimming; strait, sound; swimming, sound
6Proto-Germanicsundąswimming; sound, strait
7Proto-Germanicswimmanąto be unsteady; to swim; float
8Proto-Indo-Europeanswem(bʰ)-to bend, turn, swing; to be unsteady, move, swim

via Old Dutch sundron

StepLanguageWordMeaning
1Old Dutchsundron—
2Proto-Germanicsundrōnąto sunder, to separate
3Proto-Indo-Europeansen(e)-separate, without

Words derived from “sonderen”

Every word from Proto-Indo-European swem(bʰ)- →Every word from Proto-Germanic swimmaną →Every word from Proto-Germanic sundą →