Breadcrumb Home > Thesaurus > A Synonyms of aa Find synonyms for: Noun 1. aa, lava usage: a dry form of lava resembling clinkers 2. Alcoholics Anonymous, AA, nongovernmental organization, NGO usage: an international organization that provides a support group for persons trying to overcome alcoholism 3. Associate in Arts, AA, associate degree, associate usage: an associate degree in arts WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of aa (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: terraincognita Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language