Hellacious
Hellacious adjective - Requiring considerable physical or mental effort.
Usage example: the pioneers survived a particularly hellacious river crossing with their covered wagon barely in one piece
Uphill and hellacious are semantically related. In some cases you can use "Uphill" instead an adjective "Hellacious".
Uphill
Uphill adjective - Requiring considerable physical or mental effort.
Usage example: an uphill battle to eradicate poverty in an area of the state that has never known anything else
Hellacious and uphill are semantically related. Sometimes you can use "Hellacious" instead an adjective "Uphill".
Mutual synonyms
Related pairs
Cite this Source
Uphill and Hellacious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/hellacious/uphill
Hellacious & Uphill. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/hellacious/uphill>.
Uphill or Hellacious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/hellacious/uphill.
Google Ngram Viewer shows how "hellacious" and "uphill" have occurred on timeline