Definition of efficient
1
: productive of desired effects
especially
: capable of producing desired results with little or no waste (as of time or materials)
an efficient worker efficient machinery
2
: being or involving the immediate agent in producing an effect
the efficient action of heat in changing water to steam
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Merriam-Webster unabridged
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Time Traveler for efficient
The first known use of efficient was in the 14th century
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