Synonyms|24Antonyms|22|Broader|28Narrower|20Related|67

4 entries under efficiency topic. ×

2
ineffective(adjective, ability, proficiency, effectiveness)
2
ineffectual(adjective, ability, proficiency, effectiveness)
2
inefficacious(adjective, ability, proficiency, effectiveness)
2
unsuccessful(adjective, ability, proficiency, effectiveness)
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APASmart Define. (1970). non-beneficial thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/non-beneficial/thesaurus/synonyms
ChicagoSmart Define. 1970. "non-beneficial thesaurus" https://smartdefine.org/non-beneficial/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 1970, non-beneficial thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/non-beneficial/thesaurus/synonyms>.
MLASmart Define. "non-beneficial thesaurus" 1 January 1970. Web. 28 September 2026. <https://smartdefine.org/non-beneficial/thesaurus/synonyms>