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View synonyms for efficient

efficient

[ ih-fish-uhnt ]

adjective

  1. performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable:

    a reliable, efficient assistant.

    Synonyms: effectual

  2. satisfactory and economical to use:

    Our new air conditioner is more efficient than our old one.

  3. producing an effect, as a cause; causative.
  4. utilizing a particular commodity or product with the least waste of resources or effort (usually used in combination):

    a fuel-efficient engine.

efficient

/ ɪˈfɪʃənt /

adjective

  1. functioning or producing effectively and with the least waste of effort; competent
  2. philosophy producing a direct effect; causative
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • efˈficiently, adverb
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Other Words From

  • ef·fi·cient·ly adverb
  • non·ef·fi·cient adjective
  • qua·si-ef·fi·cient adjective
  • su·per·ef·fi·cient adjective
  • un·ef·fi·cient adjective
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Word History and Origins

Origin of efficient1

First recorded in 1350–1400; Middle English, from Middle French, from Latin efficient- (stem of efficiēns ), equivalent to ef- ef- + fic-, combining form of facere “to make, do 1 ” + -ent- -ent
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Word History and Origins

Origin of efficient1

C14: from Latin efficiēns effecting

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