Careless
Careless adjective - Not paying or showing close attention especially for the purpose of avoiding trouble.
Inefficacious and careless are semantically related. In some cases you can use "Inefficacious" instead an adjective "Careless".
Inefficacious
Inefficacious adjective - Not producing the desired result.
Careless and inefficacious are semantically related. Sometimes you can use "Careless" instead an adjective "Inefficacious".
Mutual synonyms
Cite this Source
Inefficacious and Careless. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/careless/inefficacious
Careless & Inefficacious. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/careless/inefficacious>.
Inefficacious or Careless. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/careless/inefficacious.
Google Ngram Viewer shows how "careless" and "inefficacious" have occurred on timeline