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See more synonyms for fraternize on Thesaurus.com
verb (used without object), frat·er·nized, frat·er·niz·ing.
  1. to associate in a fraternal or friendly way.
  2. to associate cordially or intimately with natives of a conquered country, enemy troops, etc.
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verb (used with object), frat·er·nized, frat·er·niz·ing.
  1. Archaic. to bring into fraternal association or sympathy.
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Also especially British, frat·er·nise.

Origin of fraternize

1605–15; < French fraterniser < Medieval Latin frāternizāre. See fraternal, -ize
Related formsfrat·er·ni·za·tion, nounfrat·er·niz·er, nounun·frat·er·nized, adjectiveun·frat·er·niz·ing, adjective


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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fraternization

Historical Examples

  • We are to succeed in the French mode, by the system of fraternization—all is French.

    American Eloquence, Volume I. (of 4)


  • Better yet, where in all Fiji was fraternization more simple?

    The Pacific Triangle

    Sydney Greenbie

  • This was the answer to Redmond's proposal of fraternization.

  • The fraternization which is developing on the front can easily turn into such a trap.


    John Spargo

  • Its privilege—its duty rather—is to ignore all applicants to fraternization that cannot return what it receives.

    Mizora: A Prophecy

    Mary E. Bradley

British Dictionary definitions for fraternization



  1. (intr often foll by with) to associate on friendly terms
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Derived Formsfraternization or fraternisation, nounfraternizer or fraterniser, 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 fraternization


1792, "act of uniting as brothers," from French fraternization (see fraternity); of relations between occupying soldiers and occupied civilians, from mid-19c; explicitly from 1944 (see fraternize).

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1610s, "to sympathize as brothers," from French fraterniser, from Medieval Latin fraternizare, from fraternus "brotherly" (see fraternity). Military sense of "cultivate friendship with enemy troops" is from 1897 (used in World War I with reference to the Christmas Truce). Used oddly by World War II armed forces to mean "have sex with women from enemy countries."

A piece of frat, Wren-language for any attractive young woman -- ex-enemy -- in occupied territory. [John Irving, "Royal Navalese," 1946]

Related: Fraternized; fraternizing.

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Online Etymology Dictionary, © 2010 Douglas Harper