Demoniac
Demoniac adjective - Of, relating to, or worthy of an evil spirit.
Hellacious and demoniac are semantically related. In some cases you can use "Hellacious" instead an adjective "Demoniac".
Hellacious
Hellacious adjective - Extreme in degree, power, or effect.
Demoniac and hellacious are semantically related. Sometimes you can use "Demoniac" instead an adjective "Hellacious".
Cite this Source
Hellacious and Demoniac. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/demoniac/hellacious
Demoniac & Hellacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/demoniac/hellacious>.
Hellacious or Demoniac. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/demoniac/hellacious.
Google Ngram Viewer shows how "demoniac" and "hellacious" have occurred on timeline