Efficient and Futile

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

Futile is an antonym for efficient.

Nearby Words: efficiency, efficiently, efficacy

Futile

Futile adjective - Producing no results.
Usage example: the prison is so well guarded that all attempts to escape have been futile

Efficient is an antonym for futile.

Nearby Word: futility
Cite this Source
Futile and Efficient. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/efficient/futile
Efficient & Futile. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/efficient/futile>.
Futile or Efficient. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/efficient/futile.
Google Ngram Viewer shows how "efficient" and "futile" have occurred on timeline