Where does “sough” come from?

sough (Middle English) comes from Old English sōh, from Proto-Germanic sik, from Proto-Germanic sīką, from Proto-Indo-European seykʷ-, from Proto-Indo-European sey- — to be wet; dribble; run; to stretch one's arm;...

Ancestry of “sough”, step by step

sough traces back through two separate lines of ancestry.

via Old English sōh

StepLanguageWordMeaning
1Old Englishsōh
2Proto-GermanicsikAlternative form of *sek
3Proto-Germanicsīkątrickling water; a dribble; a slow brook; a...
4Proto-Indo-Europeanseykʷ-to moisten; to filter
5Proto-Indo-Europeansey-to be wet; dribble; run; to stretch one's arm;...

via Middle English swoȝen

StepLanguageWordMeaning
1Middle Englishswoȝen
2Old Englishswōganto make a sound, overrun, suffocate; to make a...
3Proto-Germanicswōganąto overwhelm, break in; to resound
4Proto-Indo-Europeansweh₂gʰ-to wail

Words derived from “sough

Every word from Proto-Indo-European sey-Every word from Proto-Indo-European seykʷ-Every word from Proto-Germanic sīką