/ Thesaurus / E Synonyms of efficiency expert Find synonyms for: Noun1. efficiency expert, efficiency engineer, expertusage: an expert in increasing the efficient use of machines and personnelWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language