Breadcrumb Home > Thesaurus > E Synonyms of efficiency Find synonyms for: Noun 1. efficiency, ratio usage: the ratio of the output to the input of any system 2. efficiency, skillfulness usage: skillfulness in avoiding wasted time and effort; "she did the work with great efficiency" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of efficiency (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: persiflage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language