Inefficacious
Inefficacious adjective - Not producing the desired result.
Improbable and inefficacious are semantically related. In some cases you can use "Improbable" instead an adjective "Inefficacious".
Improbable
Improbable adjective - Not likely to be true or to occur.
Inefficacious and improbable are semantically related. Sometimes you can use "Inefficacious" instead an adjective "Improbable".
Nearby Words: improbability, improbably
Mutual synonyms
Cite this Source
Improbable and Inefficacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/inefficacious/improbable
Inefficacious & Improbable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/inefficacious/improbable>.
Improbable or Inefficacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/inefficacious/improbable.
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