Deep
Deep adjective - Extreme in degree, power, or effect.
Usage example: fell into a deep sleep after taking the potion
Hellacious and deep are semantically related. In some cases you can use "Hellacious" instead an adjective "Deep".
Hellacious
Hellacious adjective - Extreme in degree, power, or effect.
Usage example: the hellacious heat was more than we could bear
Deep and hellacious are semantically related. Sometimes you can use "Deep" instead an adjective "Hellacious".
Cite this Source
Hellacious and Deep. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deep/hellacious
Deep & Hellacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deep/hellacious>.
Hellacious or Deep. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deep/hellacious.
Google Ngram Viewer shows how "deep" and "hellacious" have occurred on timeline