Synonyms|44Antonyms|37|Broader|3Narrower|0Related|123
6
inefficacy(noun, failure)
4
ineffectiveness
4
ineffectuality
3
uselessness
2
failure
2
futility
2
ineffectualness
1
abortion
1
fatuity
1
frustration
1
impotence
1
inability
1
inadequacy
1
inanity
1
incapacity
1
inefficiency
1
invalidity
1
weakness
0
abortive
0
abortive attempt(expression, idiom, failure)
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APASmart Define. (2015). inefficaciousness thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/inefficaciousness/thesaurus/synonyms
ChicagoSmart Define. 2015. "inefficaciousness thesaurus" https://smartdefine.org/inefficaciousness/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, inefficaciousness thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/inefficaciousness/thesaurus/synonyms>.
MLASmart Define. "inefficaciousness thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/inefficaciousness/thesaurus/synonyms>