Synonyms of the word

efficiency

• n. The extent to which time is well used for the intended task.
• n. (dated) The quality of producing an effect or effects.
• n. The extent to which a resource, such as electricity, is used for the intended purpose; the ratio of useful…
• n. (United States) A one-room apartment.

ratio

• n. A number representing a comparison between two named things.
• n. (arithmetic) The relative magnitudes of two quantities (usually expressed as a quotient).
• n. (law) Short for ratio decidendi.

skillfulness

• n. The state or quality of being adept or skillful.