Where does “groundswell” come from?

Groundswell comes from English ground and English swell, with ground tracing to Old Norse grind meaning to grind, and swell deriving from Proto-Indo-European gʰrendʰ- meaning to rub or crush.

groundswell (English): A broad undulation of the open ocean, often as...

Definitions

  1. A broad undulation of the open ocean, often as...

Ancestry of “groundswell”, step by step

groundswell traces back through two separate lines of ancestry.

via English ground

StepLanguageWordMeaning
1EnglishgroundThe surface of the Earth, as opposed to the sky...
2Middle Englishgroundground; Earth
3Old Englishgrundground; bottom, foundation; abyss, depths
4Proto-Germanicgrunduzground, foundation
5Proto-Indo-Europeangʰrem-to be angry; to sound, bellow, growl, roar, be...
6Proto-Indo-Europeangʰer-to rub; to stroke; to grind

via English swell

StepLanguageWordMeaning
1EnglishswellTo become bigger, especially due to being...
2Middle EnglishswellenTo swell; to grow or become bigger or stronger;...
3Old Englishswellanto swell
4Proto-West Germanic*swellan
5Proto-Germanicswellanąto swell
6Proto-Indo-Europeanswel-to smolder; burn; scorch; beam, board, frame,...
Every word from Proto-Indo-European gʰer-Every word from Proto-Indo-European gʰrem-Every word from Proto-Germanic grunduz