Hellacious
Hellacious adjective - Extreme in degree, power, or effect.
Perilous and hellacious are semantically related. In some cases you can use "Perilous" instead an adjective "Hellacious".
Perilous
Perilous adjective - Involving potential loss or injury.
Hellacious and perilous are semantically related. Sometimes you can use "Hellacious" instead an adjective "Perilous".
Nearby Words: peril, perilously, periled
Cite this Source
Perilous and Hellacious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/hellacious/perilous
Hellacious & Perilous. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/hellacious/perilous>.
Perilous or Hellacious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/hellacious/perilous.
Google Ngram Viewer shows how "hellacious" and "perilous" have occurred on timeline