Formidable
Formidable adjective - Causing fear.
Intractable and formidable are semantically related. In some cases you can use "Intractable" instead an adjective "Formidable".
Nearby Word: formidably
Intractable
Intractable adjective - Given to resisting authority or another's control.
Formidable and intractable are semantically related. Sometimes you can use "Formidable" instead an adjective "Intractable".
Nearby Words: intractability, intractably
Mutual synonyms
Cite this Source
Intractable and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/intractable
Formidable & Intractable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/intractable>.
Intractable or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/intractable.
Google Ngram Viewer shows how "formidable" and "intractable" have occurred on timeline