Formidable
Formidable adjective - Requiring considerable physical or mental effort.
Usage example: running a marathon is a formidable undertaking
Strenuous is a synonym for formidable in difficult topic. In some cases you can use "Strenuous" instead an adjective "Formidable", when it comes to topics like onerous, arduous.
Nearby Word: formidably
Strenuous
Strenuous adjective - Requiring considerable physical or mental effort.
Usage example: a strenuous workout on the obstacle course
Formidable is a synonym for strenuous in arduous topic. You can use "Formidable" instead an adjective "Strenuous", if it concerns topics such as difficult.
Nearby Word: strenuously
Mutual synonyms
Related pairs
- stiff and formidable
- stiff and strenuous
- demanding and formidable
- demanding and strenuous
- difficult and formidable
- difficult and strenuous
- heavy and formidable
- heavy and strenuous
- strong and formidable
- strong and strenuous
- powerful and formidable
- powerful and strenuous
- vigorous and formidable
- vigorous and strenuous
Cite this Source
Strenuous and Formidable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/formidable/strenuous
Formidable & Strenuous. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/formidable/strenuous>.
Strenuous or Formidable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/formidable/strenuous.
Google Ngram Viewer shows how "formidable" and "strenuous" have occurred on timeline