Arduous
Arduous adjective - Requiring considerable physical or mental effort.
Usage example: climbing Mount Everest is an arduous, exhausting challenge
Heavy is a synonym for arduous in difficult topic. In some cases you can use "Heavy" instead the word "Arduous" as an adjective or a noun, when it comes to topics like oppressive, onerous, burdensome. popular alternative
Nearby Word: arduously
Heavy
Heavy adjective - Requiring considerable physical or mental effort.
Usage example: until we find our groove, it's going to be heavy sledding on this project
Arduous is a synonym for heavy in difficult topic. You can use "Arduous" instead an adjective "Heavy", if it concerns topics such as burdensome. popular alternative
Mutual synonyms
Both words in one sentence
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The Heavy's arduous, cumbersome, and ultimately futile attempt to spin up his gun from a dead stop in Unlockable Weapons.
Cite this Source
Heavy and Arduous. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/arduous/heavy
Arduous & Heavy. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/arduous/heavy>.
Heavy or Arduous. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/arduous/heavy.
Google Ngram Viewer shows how "arduous" and "heavy" have occurred on timeline