Formidable and Ineffective

Opposite meaning words

Formidable adjective - Causing fear.

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Ineffective is an antonym for formidable in difficult topic.

Nearby Word: formidably

Ineffective adjective - Not producing the desired result.

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Formidable is an antonym for ineffective.

Cite this Source

Ineffective and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/ineffective

Formidable & Ineffective. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/ineffective>.

Ineffective or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/ineffective.

Google Ngram Viewer shows how "formidable" and "ineffective" have occurred on timeline