Effect
Effect noun - A condition or occurrence traceable to a cause.
Efficiency is a synonym for effect in impact topic. In some cases you can use "Efficiency" instead a noun "Effect", when it comes to topics like affect.
Efficiency
Efficiency noun - The power to produce a desired result.
Effect is a synonym for efficiency in affect topic. Sometimes you can use "Effect" instead a noun "Efficiency".
Mutual synonyms
How words are described
Cite this Source
Efficiency and Effect. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/effect/efficiency
Effect & Efficiency. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/effect/efficiency>.
Efficiency or Effect. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/effect/efficiency.
Google Ngram Viewer shows how "effect" and "efficiency" have occurred on timeline