Arduous
Arduous adjective - Requiring considerable physical or mental effort.
Usage example: climbing Mount Everest is an arduous, exhausting challenge
Laborious is a synonym for arduous in difficult topic. In some cases you can use "Laborious" instead an adjective "Arduous", when it comes to topics like property, heavy, hard, onerous. popular alternative
Nearby Word: arduously
Laborious
Laborious adjective - Requiring considerable physical or mental effort.
Usage example: the laborious task of cleaning up the oil spill
Mutual synonyms
Cite this Source
Laborious and Arduous. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/arduous/laborious
Arduous & Laborious. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/arduous/laborious>.
Laborious or Arduous. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/arduous/laborious.
Google Ngram Viewer shows how "arduous" and "laborious" have occurred on timeline