Inefficacious
Inefficacious adjective - Not producing the desired result.
Unable and inefficacious are semantically related in ineffectual topic. In some cases you can use "Unable" instead an adjective "Inefficacious".
Unable
Unable adjective - Lacking qualities (as knowledge, skill, or ability) required to do a job.
Inefficacious and unable are semantically related in skill topic. Sometimes you can use "Inefficacious" instead an adjective "Unable".
Mutual synonyms
Related pairs
- inexpert and inefficacious
- inexpert and unable
- inept and inefficacious
- inept and unable
- unqualified and inefficacious
- unqualified and unable
- unfit and inefficacious
- unfit and unable
- incompetent and inefficacious
- incompetent and unable
- inefficient and inefficacious
- inefficient and unable
- inadequate and inefficacious
- inadequate and unable
Cite this Source
Unable and Inefficacious. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/inefficacious/unable
Inefficacious & Unable. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/inefficacious/unable>.
Unable or Inefficacious. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/inefficacious/unable.
Google Ngram Viewer shows how "inefficacious" and "unable" have occurred on timeline