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Efficient

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Definition

(an) efficient (process, person): (a) productive, successful (process), (a) competent, capable (person)
adjective
The term efficient should be distinguished from effective. An "effective (process)" produces the desired effect or result, while an "efficient (process)" is completed with minimum effort, energy, or waste.
Icarus is the most efficient accountant Delavigne has ever had. He works very quickly and never makes errors.
efficiency: productivity, power, competence, capability
noun
(completed) efficiently: (completed) without wasting time or resources, productively, competently, capably
adverb

Pronunciation examples
UK: The heating in our office is not very efficient.
US: We need to improve the efficiency of the sales team.

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