Swells
Undulation and swells are semantically related. in flow topic. In some cases you can use "Undulation" instead a noun "Swells".
Undulation
Undulation noun - Wavelike motion; a gentle rising and falling in the manner of waves.
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Synonyms for Undulation
Swells and undulation are semantically related. Sometimes you can replace term "Swells" with "Undulation", this nouns are similar.
Cite this Source
Undulation and Swells. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/swells/undulation
Swells & Undulation. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/swells/undulation>.
Undulation or Swells. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/swells/undulation.
Google Ngram Viewer shows how "swells" and "undulation" have occurred on timeline