Breadcrumb Home > Thesaurus > A Synonyms of aback Find synonyms for: Adverb 1. aback usage: having the wind against the forward side of the sails; "the ship came up into the wind with all yards aback" 2. aback usage: by surprise; "taken aback by the caustic remarks" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of aback (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