Inefficacious
Inefficacious adjective - Not producing the desired result.
Innocuous and inefficacious are semantically related. in ineffectual topic. In some cases you can use "Innocuous" instead an adjective "Inefficacious".
Innocuous
Innocuous adjective - Not causing or being capable of causing injury or hurt.
Inefficacious and innocuous are semantically related. Sometimes you can use "Inefficacious" instead an adjective "Innocuous".
Mutual synonyms
Cite this Source
Innocuous and Inefficacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/inefficacious/innocuous
Inefficacious & Innocuous. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/inefficacious/innocuous>.
Innocuous or Inefficacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/inefficacious/innocuous.
Google Ngram Viewer shows how "inefficacious" and "innocuous" have occurred on timeline