Rugged
Rugged adjective - Not having a level or smooth surface.
Usage example: rugged terrain that made for slow going
Undulatory and rugged are semantically related. In some cases you can use "Undulatory" instead an adjective "Rugged".
Undulatory
Undulatory adjective - Resembling waves in form or outline or motion.
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Synonyms for Undulatory
Rugged and undulatory are semantically related. Sometimes you can use "Rugged" instead an adjective "Undulatory".
Cite this Source
Undulatory and Rugged. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/rugged/undulatory
Rugged & Undulatory. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/rugged/undulatory>.
Undulatory or Rugged. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/rugged/undulatory.
Google Ngram Viewer shows how "rugged" and "undulatory" have occurred on timeline