Formidable
Formidable adjective - Requiring considerable physical or mental effort.
Usage example: running a marathon is a formidable undertaking
Hellacious and formidable are semantically related. In some cases you can use "Hellacious" instead an adjective "Formidable".
Nearby Word: formidably
Hellacious
Hellacious adjective - Requiring considerable physical or mental effort.
Usage example: the pioneers survived a particularly hellacious river crossing with their covered wagon barely in one piece
Formidable and hellacious are semantically related. Sometimes you can use "Formidable" instead an adjective "Hellacious".
Mutual synonyms
Related pairs
- strenuous and formidable
- strenuous and hellacious
- difficult and formidable
- difficult and hellacious
- heavy and formidable
- heavy and hellacious
- hard and formidable
- hard and hellacious
- tough and formidable
- tough and hellacious
- great and formidable
- great and hellacious
- terrible and formidable
- terrible and hellacious
Cite this Source
Hellacious and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/hellacious
Formidable & Hellacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/hellacious>.
Hellacious or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/hellacious.
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