efficiency
Pronunciation
  • IPA: /ɪˈfɪʃn̩si/
Noun

efficiency

  1. The extent to which time is well used for the intended task.
    Antonyms: inefficiency, wastefulness
    The efficiency of the planning department is deplorable.
  2. (dated) The quality of producing an effect or effects.
    • The manner of this divine efficiency being far above us.
  3. The extent to which a resource, such as electricity, is used for the intended purpose; the ratio of useful work to energy expended.
    Antonyms: inefficiency, wastefulness
    The efficiency of this loudspeaker is 40%.
  4. (US) A one-room apartment.
    Synonyms: efficiency apartment, bedsit
    I have an efficiency available June through July.
    fully-furnished efficiencies
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