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. 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: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language