Formidable
Formidable adjective - Causing fear.
Gruelling and formidable are semantically related in arduous topic. In some cases you can use "Gruelling" instead an adjective "Formidable", when it comes to topics like exhausting.
Nearby Word: formidably
Gruelling
Gruelling adjective - Characterized by effort to the point of exhaustion; especially physical effort.
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Synonyms for Gruelling
Formidable and gruelling are semantically related in arduous topic. Sometimes you can use "Formidable" instead an adjective "Gruelling".
Mutual synonyms
Related pairs
- strenuous and formidable
- strenuous and gruelling
- demanding and formidable
- demanding and gruelling
- difficult and formidable
- difficult and gruelling
- heavy and formidable
- heavy and gruelling
- hard and formidable
- hard and gruelling
- severe and formidable
- severe and gruelling
- tough and formidable
- tough and gruelling
Cite this Source
Gruelling and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/gruelling
Formidable & Gruelling. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/gruelling>.
Gruelling or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/gruelling.
Google Ngram Viewer shows how "formidable" and "gruelling" have occurred on timeline