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efficient

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efficiently

Main Entry:: ef·fi·cient
Pronunciation:: \i-ˈfi-shənt\
Function:: adjective
Etymology:: Middle English, from Middle French or Latin; Middle French, from Latin efficient-, efficiens, from present participle of efficere
Date:: 14th century

1: being or involving the immediate agent in producing an effect <the efficient action of heat in changing water to steam>2: productive of desired effects ; especially : productive without waste <an efficient worker>

synonyms see effective

— ef·fi·cient·ly adverb

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