Grueling
Grueling adjective - Requiring considerable physical or mental effort.
Usage example: running a marathon is grueling
Mutual synonyms
Related pairs
Cite this Source
Testing and Grueling. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/grueling/testing
Grueling & Testing. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/grueling/testing>.
Testing or Grueling. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/grueling/testing.
Google Ngram Viewer shows how "grueling" and "testing" have occurred on timeline