Hard
Hard adjective - Requiring considerable physical or mental effort.
Usage example: a hard exam to pass
Hellacious and hard are semantically related. In some cases you can use "Hellacious" instead an adjective "Hard".
Hellacious
Hellacious adjective - Extreme in degree, power, or effect.
Usage example: the hellacious heat was more than we could bear
Hard and hellacious are semantically related. Sometimes you can use "Hard" instead an adjective "Hellacious".
Mutual synonyms
Cite this Source
Hellacious and Hard. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/hard/hellacious
Hard & Hellacious. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/hard/hellacious>.
Hellacious or Hard. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/hard/hellacious.
Google Ngram Viewer shows how "hard" and "hellacious" have occurred on timeline