Synonyms|643Antonyms|86|Broader|11Narrower|17Related|391
0
grounds
0
idleness(noun, weakness, inefficiency)
0
ignorance(noun, weakness, inefficiency)
0
imbecility
0
inaptitude
0
inconvenience
0
inefficaciousness
0
inefficacy
0
ineligibility
0
inflexibility
0
injury
0
insolubility
0
irrationality
0
lack(noun, weakness, inefficiency)
0
languor
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largeness
0
maladroitness
0
meagerness
0
mediocrity
0
messiness
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APASmart Define. (2016). efficiency thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/efficiency/thesaurus/antonyms
ChicagoSmart Define. 2016. "efficiency thesaurus" https://smartdefine.org/efficiency/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, efficiency thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/efficiency/thesaurus/antonyms>.
MLASmart Define. "efficiency thesaurus" 25 February 2016. Web. 21 September 2026. <https://smartdefine.org/efficiency/thesaurus/antonyms>