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Showing results for efficiency. Search instead for efficiency/2.
Definitions

efficiency

[ih-fish-uhn-see] / ɪˈfɪʃ ən si /
NOUN
adeptness, effectiveness
Synonyms
STRONGEST
ability adaptability capability competence energy expertise performance productivity readiness skill talent
STRONG
abundance address adequacy capableness competency completeness economy effectualness efficacy facility faculty know-how potency power powerfulness productiveness proficiency prowess quantity resourcefulness response skillfulness suitability suitableness thoroughness
Antonyms
STRONGEST
idleness ignorance impotence inability inadequacy incapability incapacity incompetence ineptness weakness
STRONG
inefficiency lack
WEAK
helplessness ineffectiveness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Improving energy efficiency is critical as wireless data demand continues to rise.

From Science Daily • Apr. 2, 2026

He instead argued that the speed at which commanders are now taking action is a "consequence of the increased efficiency" that Maven has enabled.

From BBC • Apr. 1, 2026

Irenic proposed staff cuts, shelving projects, and leveraging AI; Snap’s board welcomes input, focusing on efficiency.

From Barron's • Mar. 31, 2026

The 1-bit technology enables AI to run locally on consumer devices and industrial-edge devices, boosting data center efficiency.

From The Wall Street Journal • Mar. 31, 2026

Then he swept the floor, washed the tables, and rubbed down the bar, moving with a methodical efficiency.

From "The Name of the Wind" by Patrick Rothfuss

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.