Inefficacious
Inefficacious adjective - Not producing the desired result.
Unusable and inefficacious are semantically related In some cases you can use "Unusable" instead an adjective "Inefficacious".
Unusable
Unusable adjective - Not capable of being put to use or account.
Inefficacious and unusable are semantically related in impracticable topic. Sometimes you can use "Inefficacious" instead an adjective "Unusable".
Nearby Word: unused
Mutual synonyms
Related pairs
- inept and inefficacious
- inept and unusable
- worthless and inefficacious
- worthless and unusable
- inoperative and inefficacious
- inoperative and unusable
- idle and inefficacious
- idle and unusable
- ineffective and inefficacious
- ineffective and unusable
- vain and inefficacious
- vain and unusable
- useless and inefficacious
- useless and unusable
Cite this Source
Unusable and Inefficacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/inefficacious/unusable
Inefficacious & Unusable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/inefficacious/unusable>.
Unusable or Inefficacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/inefficacious/unusable.
Google Ngram Viewer shows how "inefficacious" and "unusable" have occurred on timeline