Hellacious
Hellacious adjective - Extreme in degree, power, or effect.
Usage example: the hellacious heat was more than we could bear
Severe and hellacious are semantically related. In some cases you can use "Severe" instead an adjective "Hellacious".
Severe
Severe adjective - Requiring considerable physical or mental effort.
Usage example: a severe test of courage
Hellacious and severe are semantically related. Sometimes you can use "Hellacious" instead an adjective "Severe".
Mutual synonyms
Related pairs
Cite this Source
Severe and Hellacious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/hellacious/severe
Hellacious & Severe. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/hellacious/severe>.
Severe or Hellacious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/hellacious/severe.
Google Ngram Viewer shows how "hellacious" and "severe" have occurred on timeline