Breadcrumb Home > Thesaurus > O Synonyms of optimum Find synonyms for: Noun 1. optimum, good, goodness usage: most favorable conditions or greatest degree or amount possible under given circumstances Adjective 1. optimum, optimal, best (vs. worst) usage: most desirable possible under a restriction expressed or implied; "an optimum return on capital"; "optimal concentration of a drug" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of optimum (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language