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See more synonyms for aggro on Thesaurus.com
noun British and Australian Informal.
  1. aggressiveness, especially that of an urban youth gang or gang member.
  2. trouble; irritation.
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Origin of aggro

1965–70; construed as a shortening of either aggravation or aggression (or aggressive); see -o
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for aggro


  1. British slang aggressive behaviour, esp by youths in a gang
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Word Origin

C20: from aggravation
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