English

Noun

efficiency ‎(countable and uncountable, plural efficiencies)

1. The extent to which time is well used for the intended task.

   The efficiency of the planning department is deplorable.

   • 2012 September 7, Phil McNulty, “Moldova 0-5 England”, in BBC Sport:

     The display and result must be placed in the context that was it was against a side that looked every bit their Fifa world ranking of 141 - but England completed the job with efficiency to record their biggest away win in 19 years.

2. (dated) The quality of producing an effect or effects.
   • Hooker

     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.

   The efficiency of this loudspeaker is 40%.

4. (United States) A one-room apartment.

   I have an efficiency available June through July.

   fully-furnished efficiencies

Antonyms

• inefficiency
• wastefulness

Derived terms

Related terms

• effect
• effective
• effectiveness
• effectivity
• effector
• effectual
• effectuate
• efficacious
• efficacity
• efficacy
• efficient
• efficiently

Synonyms

• effectiveness
• (Britain, Ireland) bedsit

Translations