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[dis-i-loo-zhuh n] /ˌdɪs ɪˈlu ʒən/
verb (used with object)
to free from or deprive of illusion, belief, idealism, etc.; disenchant.
a freeing or a being freed from illusion or conviction; disenchantment.
Origin of disillusion
First recorded in 1590-1600; dis-1 + illusion
Related forms
disillusionment, noun
[dis-i-loo-siv] /ˌdɪs ɪˈlu sɪv/ (Show IPA),
undisillusioned, adjective
1. disabuse, disenthrall, undeceive, disappoint. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for disillusioning
Contemporary Examples
Historical Examples
  • And very soon came that other sensation, so disillusioning, that all else was crowded out.

    Beyond John Galsworthy
  • They are a disillusioning mirror in which I see myself a million times.

    Fantazius Mallare Ben Hecht
  • Now, it would seem on the contrary that they devote all their efforts to disillusioning us.

    Ancient Manners Pierre Louys
  • It was disillusioning to go to the place where there were many of them.

    Geography and Plays Gertrude Stein
  • Happily, the disillusioning fog had come upon us by degrees.

  • When the tumult of my disillusioning was past, my mind grew clearer.

  • He was passing through the bitter stage of disillusioning which Claud had prophesied for him.

    The Tree of Knowledge

    Mrs. Baillie Reynolds
  • To have house and Bible shrink so, under the disillusioning corrected angle, is loss-for a moment.

  • Only a few persons showed any sympathy to sweeten for me the bitterness of such a disillusioning.

    The Social Cancer Jos Rizal
British Dictionary definitions for disillusioning


(transitive) to destroy the ideals, illusions, or false ideas of
the act of disillusioning or the state of being disillusioned
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 disillusioning



"to free or be freed from illusion," 1855, from a noun meaning "act of freeing from illusion" (1814); see dis- + illusion. Related: Disillusioned; disillusioning.

Online Etymology Dictionary, © 2010 Douglas Harper
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