Formidable
Formidable adjective - Causing fear.
Grumpy and formidable are semantically related. In some cases you can use "Grumpy" instead an adjective "Formidable".
Nearby Word: formidably
Grumpy
Grumpy adjective - Easily irritated or annoyed.
Formidable and grumpy are semantically related. Sometimes you can use "Formidable" instead an adjective "Grumpy".
Mutual synonyms
Cite this Source
Grumpy and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/grumpy
Formidable & Grumpy. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/grumpy>.
Grumpy or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/grumpy.
Google Ngram Viewer shows how "formidable" and "grumpy" have occurred on timeline