Definition of efficient

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< efficiency expert

effigy >

ef·fi·cient    (-fshnt) KEY 

ADJECTIVE:

1. Acting directly to produce an effect: an efficient cause. See Synonyms at effective.
2. 1. Acting or producing effectively with a minimum of waste, expense, or unnecessary effort.
   2. Exhibiting a high ratio of output to input.

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ETYMOLOGY:
Middle English, from Old French, from Latin efficins, efficient- present participle of efficere, to effect ; see effect

OTHER FORMS:
ef·ficient·ly(Adverb)