Challenging
Challenging adjective - Requiring considerable physical or mental effort.
Usage example: an exceptionally challenging brainteaser
Rough and challenging are semantically related. In some cases you can use "Rough" instead an adjective "Challenging".
Rough
Rough adjective - Requiring considerable physical or mental effort.
Usage example: a forensics expert who willingly takes on rough assignments
Challenging and rough are semantically related. Sometimes you can use "Challenging" instead an adjective "Rough".
Cite this Source
Rough and Challenging. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/challenging/rough
Challenging & Rough. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/challenging/rough>.
Rough or Challenging. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/challenging/rough.
Google Ngram Viewer shows how "challenging" and "rough" have occurred on timeline