Efficacity and Ineffectiveness

Opposite meaning words

Efficacity noun - The power to produce a desired result.

Usage example: the limited efficacity of the primitive tool as an instrument for cutting raw meat

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Ineffectiveness is an antonym for efficacity.

Ineffectiveness noun - Lacking the power to be effective.

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Efficacity is an antonym for ineffectiveness.

Nearby Words: ineffective, ineffectively

Cite this Source

Ineffectiveness and Efficacity. (2017). Retrieved 2026, July 22, from https://thesaurus.plus/related/efficacity/ineffectiveness

Efficacity & Ineffectiveness. N.p., 2017. Web. 22 Jul. 2026. <https://thesaurus.plus/related/efficacity/ineffectiveness>.

Ineffectiveness or Efficacity. 2017. Accessed July 22, 2026. https://thesaurus.plus/related/efficacity/ineffectiveness.

Google Ngram Viewer shows how "efficacity" and "ineffectiveness" have occurred on timeline