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[ak-ruh-moh-nee-uh s]
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  1. caustic, stinging, or bitter in nature, speech, behavior, etc.: an acrimonious answer; an acrimonious dispute.
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Origin of acrimonious

From the Medieval Latin word ācrimōniōsus, dating back to 1605–15. See acrimony, -ous
Related formsac·ri·mo·ni·ous·ly, adverbac·ri·mo·ni·ous·ness, nounun·ac·ri·mo·ni·ous, adjectiveun·ac·ri·mo·ni·ous·ly, adverbun·ac·ri·mo·ni·ous·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for acrimonious


  1. characterized by bitterness or sharpness of manner, speech, temper, etc
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Derived Formsacrimoniously, adverbacrimoniousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for acrimonious


1610s, "acrid," from French acrimonieux, from Medieval Latin acrimoniosus, from Latin acrimonia (see acrimony). Of dispositions, debates, etc., from 1775. Related: Acrimoniously; acrimoniousness.

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Online Etymology Dictionary, © 2010 Douglas Harper