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efficiency
noun
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How to pronounce efficiency:

Definition of efficiency:

efficiency (noun):
great skill or competence
the quality or degree of being efficient
the ratio of the output to the input of any system.

Synonyms for efficiency:

ability
cost-effectiveness
economy
effectiveness
efficaciousness
efficacity
efficacy
orderliness
organization
power
productiveness
productivity
ratio

Antonyms for efficiency:

carelessness
disorder
disorderedness
disorderliness
disorganisation
disorganization
inability
inadequacy
incapability
incompetence
ineffectiveness
ineffectuality
inefficiency
ineptitude
messiness
slackness
sloppiness
unproductiveness
uselessness
wastefulness
Other 4-syllable words

Here are some other common 4-syllable words.

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