15 entries under inefficiency topic. ×

11
powerlessness(noun, weakness, impotence, helplessness, incapacity)
7
frailty(noun, weakness, softness, infirmity, helplessness)
7
helplessness(noun, weakness, impotence, powerlessness, incapacity)
5
feebleness(noun, weakness, infirmity, helplessness, powerlessness)
5
ineffectiveness(noun, weakness, helplessness, powerlessness, incapacity)
4
infirmity(noun, weakness, helplessness, powerlessness, incapacity)
3
enervation(noun, weakness, infirmity, helplessness, powerlessness)
3
inadequacy(noun, weakness, helplessness, powerlessness, incapacity)
3
ineffectuality(noun, weakness, helplessness, powerlessness, incapacity)
3
ineffectualness(noun, weakness, helplessness, powerlessness, incapacity)
3
inefficacy(noun, helplessness, incapacity, ineffectuality)
3
uselessness(noun, helplessness, incapacity, ineffectuality)
2
incapability(noun, helplessness, incapacity, ineffectuality)
2
incapacity(noun, helplessness, ineffectuality)
1
paralysis(noun, helplessness, incapacity, ineffectuality)
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APASmart Define. (2015). mana thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mana/thesaurus/antonyms
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HarvardSmart Define 2015, mana thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mana/thesaurus/antonyms>.
MLASmart Define. "mana thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/mana/thesaurus/antonyms>