Hellacious and Unknown

Opposite meaning words

Hellacious adjective - Extreme in degree, power, or effect.

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Unknown is an antonym for hellacious in excellent topic.

Unknown adjective - Happening or existing without one's knowledge.

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Hellacious is an antonym for unknown.

Nearby Words: unknowable, unknowing

Cite this Source

Unknown and Hellacious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/hellacious/unknown

Hellacious & Unknown. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/hellacious/unknown>.

Unknown or Hellacious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/hellacious/unknown.

Google Ngram Viewer shows how "hellacious" and "unknown" have occurred on timeline