Efficient and Ineffective

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

Ineffective is an antonym for efficient in topics: inefficient, adept.

Nearby Words: efficiency, efficiently, efficacy

Ineffective

Ineffective adjective - Not producing the desired result.
Usage example: an ineffective effort to reduce unemployment that only spurred inflation

Efficient is an antonym for ineffective in topics: unproductive, effective, useless.

Both words in one sentence

  • Not only are powersets with healing abilities typically Boring but Practical to use, even the showier heals are fairly ineffective compared to the efficient but invisible buffs and debuff powers.
  • Furthermore, because thermal energy can only be transmitted through a vacuum by radiation instead of more efficient methods like convection or conduction, plasma that doesn't hit something in space is largely ineffective, especially when ships have heat-resistant hulls.
Cite this Source
Ineffective and Efficient. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/efficient/ineffective
Efficient & Ineffective. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/efficient/ineffective>.
Ineffective or Efficient. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/efficient/ineffective.
Google Ngram Viewer shows how "efficient" and "ineffective" have occurred on timeline