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pros and cons

plural noun
  1. the favorable and the unfavorable factors or reasons; advantages and disadvantages.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pros and cons

pros and cons

pl n
  1. the various arguments in favour of and against a motion, course of action, etc
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Word Origin for pros and cons

C16: from Latin prō for + con, from contrā against
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

Idioms and Phrases with pros and cons

pros and cons

Arguments or considerations for and against something, as in We'd best weigh all the pros and cons before we decide to add a new wing to the library. This idiom is taken from the Latin pro for “for” and con for “against.” [Late 1500s]

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.