Where does “sound” come from?

sound (Middle English) comes 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 “sound”, step by step

StepLanguageWordMeaning
1Old Englishsundswimming; sea, water
2Old Norsesundswimming; strait, sound; swimming, sound
3Proto-Germanicsundąswimming; sound, strait
4Proto-Germanicswimmanąto be unsteady; to swim; float
5Proto-Indo-Europeanswem(bʰ)-to bend, turn, swing; to be unsteady, move, swim

Words derived from “sound”

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