groundswell

== English == === Alternative forms === ground swell === Etymology === From ground +‎ swell. === Noun === groundswell (plural groundswells) (nautical, surfing) A broad undulation of the open ocean, often as the result of a distant disturbance. (by extension) A broadly-based shifting of public opinion. ==== Related terms ==== wind swell ==== Translations ==== === Further reading === “groundswell”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.