Breadcrumb Home > Thesaurus > A Synonyms of additional Find synonyms for: Adjective 1. extra, additional, additive (vs. subtractive) usage: further or added; "called for additional troops"; "need extra help"; "an extra pair of shoes" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of additional (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: saturnine Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language