Effectiveness
Effectiveness noun - The power to produce a desired result.
Usage example: the huge upsurge in sales pretty much demonstrated the effectiveness of the new ad campaign
Inadequacy is an antonym for effectiveness.
Inadequacy
Inadequacy noun - The lack of sufficient ability, power, or means.
Usage example: tried to blame others in order to hide the inadequacy of his leadership
Effectiveness is an antonym for inadequacy.
Nearby Words: inadequate, inadequately
How words are described
| physical | physical effectiveness | physical inadequacy |
| general | general effectiveness | general inadequacy |
| ridiculous | ridiculous effectiveness | ridiculous inadequacy |
Cite this Source
Inadequacy and Effectiveness. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/effectiveness/inadequacy
Effectiveness & Inadequacy. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/effectiveness/inadequacy>.
Inadequacy or Effectiveness. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/effectiveness/inadequacy.
Google Ngram Viewer shows how "effectiveness" and "inadequacy" have occurred on timeline