Breadcrumb Home > Thesaurus > A Synonyms of antacid Find synonyms for: Noun 1. antacid, gastric antacid, alkalizer, alkaliser, antiacid, agent usage: an agent that counteracts or neutralizes acidity (especially in the stomach) Adjective 1. antacid, antagonistic (vs. synergistic), incompatible usage: acting to neutralize acid (especially in the stomach) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of antacid (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: anichean Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language