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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
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. 2015.
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Examples from the web for disillusion
  • To see a poet near at hand, to see him in his own home, is generally matter for disillusion.
  • After long conflicts, the second set of elections is often a story of unrealistic expectation turned to disillusion and apathy.
  • Artificial intelligence has gone through these cycles of optimism and hype followed by disillusion and collapse.
  • There is less disillusion here than continuing rage.
  • But by then the voters were showing signs of disillusion with the failure of the reformers to bring about change.
  • Illusion is the currency of our culture: disillusion is its inflation.
  • But relief is already being followed by disillusion.
  • disillusion destroys the rapture of the introductory scene.
  • Innovations of costume rendered this disillusion more complete.
  • Work starts, but political pressure causes the specification to change, so costs spiral and disillusion grows.
British Dictionary definitions for disillusion


(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 disillusion

"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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