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[chuhm-ee] /ˈtʃʌm i/
adjective, chummier, chummiest. Informal.
friendly; intimate; sociable.
Origin of chummy
First recorded in 1825-35; chum1 + -y1
Related forms
chummily, adverb
chumminess, noun
close, devoted, familiar, congenial. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for chumminess
Historical Examples
  • That is due to the chumminess or the affinity of iron with oxygen.

    The Boy With the U.S. Miners Francis Rolt-Wheeler
  • Her friendship with Lily Pendleton was not like the chumminess of other girls.

  • He was a jolly man, given to oratory and to chumminess with the arts.

    Babbitt Sinclair Lewis
  • A state of chumminess between persons of opposite sex and suitable ages is more or less in the line of Nature.

    The Roycroft Dictionary Elbert Hubbard
  • Ive always wondered at your chumminess with him, said Nelson slowly, reseating himself.

  • American officers got along well with the French but they never reached the same degree of chumminess that the men did.

    The A.E.F. Heywood Broun
  • I will do my best to be a good wife to you—but chumminess is not mine to give, nor can I promise ever to be your dicky-bird.

  • As her reception of Paul's sister was not conducive to chumminess, Paul did not bring Linda again.

    Big Timber Bertrand W. Sinclair
British Dictionary definitions for chumminess


adjective -mier, -miest
(informal) friendly
Derived Forms
chummily, adverb
chumminess, 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
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Word Origin and History for chumminess



1874, from chum (n.1) + -y (2). Related: Chumminess. Previously it was a noun, a common name for a chimney sweep, as a corruption of chinmey.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for chumminess



Very friendly; buddy-buddy, palsy-walsy (1880s+)


chum1 (1840s+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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