Efficient
Efficient adjective - Producing or capable of producing a desired result.
Usage example: that manual lawn mower is not a very efficient tool for doing a huge yard
Useless
Useless adjective - Producing no results.
Usage example: a useless attempt to reach an agreement
Both words in one sentence
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These smaller engines are intended only for orbital adjustments and initiating re-entry using carefully timed burns - effective and efficient in a vacuum, but nearly useless in atmosphere.
Source: Film / Moonraker - The Grand Finale reveals that when Dwight becomes regional manager he actually fires the incompetent and useless people like Kevin and Toby and the branch becomes much more efficient as a result.
Source: Ultimate Job Security -
Death of a Thousand Cuts: The lowly Machine Gun, the quintessential useless peashooter is, per unit of heat produced and ton of ammo consumed, the most efficient weapon.
Source: Video Game / MechWarrior
Cite this Source
Useless and Efficient. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/efficient/useless
Efficient & Useless. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/efficient/useless>.
Useless or Efficient. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/efficient/useless.
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