Abortive and Efficacious

Opposite meaning words

Abortive adjective - Producing no results.

Usage example: an abortive attempt to recover the sunken pirate ship

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Efficacious is an antonym for abortive.

Efficacious adjective - Producing or capable of producing a desired result.

Usage example: taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered

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Abortive is an antonym for efficacious in effective topic.

Cite this Source

Efficacious and Abortive. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/abortive/efficacious

Abortive & Efficacious. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/abortive/efficacious>.

Efficacious or Abortive. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/abortive/efficacious.

Google Ngram Viewer shows how "abortive" and "efficacious" have occurred on timeline