Steep
Steep adjective - Having an incline approaching the perpendicular.
Undulating and steep are semantically related. In some cases you can use "Undulating" instead an adjective "Steep".
Undulating
Steep and undulating are semantically related. Sometimes you can use "Steep" instead an adjective "Undulating".
Mutual synonyms
Cite this Source
Undulating and Steep. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/steep/undulating
Steep & Undulating. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/steep/undulating>.
Undulating or Steep. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/steep/undulating.
Google Ngram Viewer shows how "steep" and "undulating" have occurred on timeline