Challenging
Challenging adjective - Requiring considerable physical or mental effort.
Usage example: an exceptionally challenging brainteaser
Rugged and challenging are semantically related. In some cases you can use "Rugged" instead an adjective "Challenging".
Rugged
Rugged adjective - Requiring considerable physical or mental effort.
Usage example: even more rugged than most ultramarathons, this one crosses a desert
Challenging and rugged are semantically related. Sometimes you can use "Challenging" instead an adjective "Rugged".
Mutual synonyms
Related pairs
Cite this Source
Rugged and Challenging. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/challenging/rugged
Challenging & Rugged. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/challenging/rugged>.
Rugged or Challenging. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/challenging/rugged.
Google Ngram Viewer shows how "challenging" and "rugged" have occurred on timeline