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efficient
 
Adjective efficient has 2 senses
  1. efficient - being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas"
    Antonyms:     inefficient, uneconomical, wasteful
  2. effective, efficient - able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"
    Antonym: incompetent (indirect, via competent)
efficiant efficiencies efficiency efficiency apartment efficiency engineer efficiency expert efficiend efficient efficient efficientiy efficientl efficiently efficies efficy effie effiec effiecently

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