Inefficacy and Sinew

Opposite meaning words

Inefficacy noun - A lack of efficacy.

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Sinew is an antonym for inefficacy.

Sinew noun - The ability to exert effort for the accomplishment of a task.

Usage example: the justices displayed great intellectual depth and sinew in writing their opinion on this case

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Inefficacy is an antonym for sinew.

Nearby Word: sinewy

Cite this Source

Sinew and Inefficacy. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/inefficacy/sinew

Inefficacy & Sinew. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/inefficacy/sinew>.

Sinew or Inefficacy. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/inefficacy/sinew.

Google Ngram Viewer shows how "inefficacy" and "sinew" have occurred on timeline