Hellacious
Hellacious adjective - Extreme in degree, power, or effect.
Impugnable and hellacious are semantically related. In some cases you can use "Impugnable" instead an adjective "Hellacious".
Impugnable
Impugnable adjective - Subject to being discredited.
Hellacious and impugnable are semantically related. Sometimes you can use "Hellacious" instead an adjective "Impugnable".
Cite this Source
Impugnable and Hellacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/hellacious/impugnable
Hellacious & Impugnable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/hellacious/impugnable>.
Impugnable or Hellacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/hellacious/impugnable.
Google Ngram Viewer shows how "hellacious" and "impugnable" have occurred on timeline