Mutual synonyms
Both words in one sentence
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Because New Hell is constantly concerned about saving energy, all the new techniques revolve around "scientific magic", since it is far more efficient than the old techniques.
Source: Manga / The World God Only Knows - Archer is practically the patron saint of this because he recognizes it as the most efficient means of saving people, even if he hates it.
Source: Dark Messiah -
He then reneuralyzes them once he realizes that he's carried on for far too long, now with a hilarious story requesting that they enjoy using new space-efficient, energy-saving cars.
Source: Film / Men in Black II
Cite this Source
Saving and Efficient. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/efficient/saving
Efficient & Saving. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/efficient/saving>.
Saving or Efficient. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/efficient/saving.
Google Ngram Viewer shows how "efficient" and "saving" have occurred on timeline