Efficient and Otiose
Opposite meaning words
Efficient
Efficient adjective - Producing or capable of producing a desired result.
Otiose
Otiose adjective - Producing no results.
Usage example: since you haven't read the book, I suppose that it would be otiose to inquire what you thought of it
Cite this Source
Otiose and Efficient. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/efficient/otiose
Efficient & Otiose. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/efficient/otiose>.
Otiose or Efficient. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/efficient/otiose.
Google Ngram Viewer shows how "efficient" and "otiose" have occurred on timeline