Efficiency
Merriam-Webster Online Dictionary
efficiency (noun)1.
the quality or degree of being - efficient
2.
a) efficient operation
b) (1) effective operation as measured by a comparison of production with cost (as in energy, time, and money)
(2) the ratio of the useful energy delivered by a dynamic system to the energy supplied to it
3.
- efficiency apartment
Merriam-Webster Online Thesaurus
efficiency (noun)the power to produce a desired result
SYNONYMS:
edge, effectiveness, effectualness, efficaciousness, efficacity, efficiency, productivenessRELATED WORDS:
ability, capability, capacity; potency, puissance, strengthNEAR ANTONYMS:
inability, inadequacy, inadequateness, incompetence, incompetency