/ Thesaurus Find synonyms for: Adjective1. 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.See also: additional (Dictionary) Related Content Daily Word Quiz: sublime Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language Synonyms Index