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