Simple
Smooth
Smooth adjective - Involving minimal difficulty or effort.
Usage example: it should be smooth going from this point on
Simple is a synonym for smooth in easy topic. You can use "Simple" instead an adjective "Smooth", if it concerns topics such as straightforward.
Mutual synonyms
Cite this Source
Smooth and Simple. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/simple/smooth
Simple & Smooth. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/simple/smooth>.
Smooth or Simple. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/simple/smooth.
Google Ngram Viewer shows how "simple" and "smooth" have occurred on timeline