Effectiveness and Unsoundness
Opposite meaning words
Effectiveness
Effectiveness noun - The capacity to persuade.
Usage example: the “guilty” verdict was all the proof needed of the effectiveness of the prosecutor's closing argument
Unsoundness is an antonym for effectiveness.
Unsoundness
Unsoundness noun - The condition of not being in good health.
Effectiveness is an antonym for unsoundness.
Cite this Source
Unsoundness and Effectiveness. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/effectiveness/unsoundness
Effectiveness & Unsoundness. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/effectiveness/unsoundness>.
Unsoundness or Effectiveness. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/effectiveness/unsoundness.
Google Ngram Viewer shows how "effectiveness" and "unsoundness" have occurred on timeline