The meaning of GROUNDSWELL is a broad deep undulation of the ocean caused by an often distant gale or seismic disturbance. How to use groundswell in a sentence.
groundswell (of something)the sudden increase of a particular feeling among a group of people a groundswell of support There was a groundswell of opinion that he should resign. Join us Join our community to access the latest language learning and assessment tips from Oxford University Press!