Efficient
Useful
Useful adjective - Capable of being put to use or account.
Mutual synonyms
Both words in one sentence
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Quite a few of the Combo Card weapons aren't so much useful and efficient survival weapons as much as they are zombie torture devices.
Source: Video Game / Dead Rising 2 -
Boring but Practical: Many options are less interesting than "possessing a man into walking into his own bullet" or other Rasputinian Deaths, but are far more useful and efficient.
Source: Video Game / Dishonored -
In the case of 3.5, Feats and Magic Items from later books in that Edition's print run were much more useful and efficient than earlier counterparts.
Source: Power Creep
Cite this Source
Useful and Efficient. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/efficient/useful
Efficient & Useful. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/efficient/useful>.
Useful or Efficient. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/efficient/useful.
Google Ngram Viewer shows how "efficient" and "useful" have occurred on timeline