Herculean and Onerous

Herculean

Herculean adjective - Requiring considerable physical or mental effort.
Usage example: the herculean task of grading 60 student essays over one weekend

Onerous and herculean are semantically related in arduous topic. In some cases you can use "Onerous" instead an adjective "Herculean".

Onerous

Onerous adjective - Requiring much time, effort, or careful attention.
Usage example: building the scale model of the frigate was an onerous task

Herculean and onerous are semantically related in weighty topic. Sometimes you can use "Herculean" instead an adjective "Onerous".

Nearby Word: onerously
Cite this Source
Onerous and Herculean. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/herculean/onerous
Herculean & Onerous. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/herculean/onerous>.
Onerous or Herculean. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/herculean/onerous.
Google Ngram Viewer shows how "herculean" and "onerous" have occurred on timeline