Good
Good adjective - Having or showing exceptional knowledge, experience, or skill in a field of endeavor.
Usage example: he's good at math
Inefficient
Inefficient adjective - Not producing the desired result.
Good is an antonym for inefficient.
Nearby Words: inefficiency, inefficiently
Both words in one sentence
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It's tricky to strike a balance between allies being too good and killing most of the enemies and being too inefficient and getting killed themselves constantly.
Cite this Source
Inefficient and Good. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/good/inefficient
Good & Inefficient. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/good/inefficient>.
Inefficient or Good. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/good/inefficient.
Google Ngram Viewer shows how "good" and "inefficient" have occurred on timeline