Formidable and Rugged

Formidable

Formidable adjective - Requiring considerable physical or mental effort.
Usage example: running a marathon is a formidable undertaking

Rugged and formidable are semantically related In some cases you can use "Rugged" instead an adjective "Formidable".

Nearby Word: formidably

Rugged

Rugged adjective - Requiring considerable physical or mental effort.
Usage example: even more rugged than most ultramarathons, this one crosses a desert

Formidable and rugged are semantically related in difficult topic. Sometimes you can use "Formidable" instead an adjective "Rugged".

Nearby Words: ruggedly, rugger
Cite this Source
Rugged and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/rugged
Formidable & Rugged. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/rugged>.
Rugged or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/rugged.
Google Ngram Viewer shows how "formidable" and "rugged" have occurred on timeline