efficiency

Noun

efficiency (countable and uncountable, plural efficiencies)

1. The extent to which a resource is used for the intended purpose.
   • In a letter DeJoy sent to Congress on Thursday, he said DOGE teams will “assist us in identifying and achieving further efficiencies,” saying the Elon Musk-led agency will focus on improving the management of USPS retirement assets and the Workers’ Compensation Program, as well as addressing the...2025 March 13, Gabe Cohen, “Head of Postal Service agrees to let DOGE work with USPS”, in CNN

   Antonyms:

   inefficiency, wastefulness

   1. The ratio of useful work to energy expended. Often given the symbol η.
      • The efficiency of this loudspeaker is 40%.
   2. The extent to which time is well used for the intended task.
      • The efficiency of the planning department is deplorable.
      • Even at the busiest periods, an air of quiet orderliness pervades the hall, and the first impression gained by the traveller is one of efficiency, neatness and cleanliness.1951 October, H. A. Vallance, “Across Denmark by Lyntog”, in Railway Magazine, page 658
2. (dated) The quality of producing an effect or effects.
   • The manner of this divine efficiency being far above us.[1594], Richard Hooker, edited by J[ohn] S[penser], Of the Lawes of Ecclesiastical Politie, […], London: […] Iohn Windet, […], →OCLC, (please specify the page)
3. (US) A one-room apartment.
   • I have an efficiency available June through July.
   • fully-furnished efficiencies

   Synonyms:

   efficiency apartment, studio apartment, bedsit