Efficiency
Efficiency noun - The power to produce a desired result.
Weakness
Weakness noun - The quality or state of lacking physical strength or vigor.
Efficiency is an antonym for weakness.
How words are described
Cite this Source
Weakness and Efficiency. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/efficiency/weakness
Efficiency & Weakness. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/efficiency/weakness>.
Weakness or Efficiency. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/efficiency/weakness.
Google Ngram Viewer shows how "efficiency" and "weakness" have occurred on timeline