Breadcrumb Home > Thesaurus > I Synonyms of irs Find synonyms for: Noun 1. Internal Revenue Service, IRS, agency, federal agency, government agency, bureau, office, authority usage: the bureau of the Treasury Department responsible for tax collections WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of irs (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: occultation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language