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Synonyms

disillusion

American  
[dis-i-loo-zhuhn] / ˌdɪs ɪˈlu ʒən /

verb (used with object)

  • disillusions,
    present (3rd person singular)
  • disillusioned,
    past participle,  past
  • disillusioning
    present participle
  1. to free from or deprive of illusion, belief, idealism, etc.; disenchant.

    Synonyms:
    disappoint, undeceive, disenthrall, disabuse

noun

  • disillusions
    plural
  1. a freeing or a being freed from illusion or conviction; disenchantment.

disillusion British  
/ ˌdɪsɪˈluːʒən /

verb

  1. (tr) to destroy the ideals, illusions, or false ideas of

"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

noun

  1. 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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Etymology

Origin of disillusion

First recorded in 1590–1600; dis- 1 + illusion


Explanation

To disillusion is to make someone realize their belief isn't true. If your cousin believes that the Tooth Fairy will come in the night, take her tooth and sprinkle her with fairy dust. It would be too cruel to disillusion her. When you disillusion someone, you take away a false belief, or an illusion. Your parents' divorce might disillusion your romantic ideas of marriage, and a political candidate you supported enthusiastically could disillusion if she doesn't follow through on her promises. The disappointment you feel as a result of being disillusioned is also called disillusion, like the disillusion that results when your older sister tells you the truth about the Easter Bunny.

Keep Reading on Vocabulary.com

Vocabulary lists containing disillusion

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

An estimated 75,000—some 2.5% of the population—had no desire to live within an independent republic that held memories of “terror, disillusion, and death,” preferring to uproot themselves to Canada and beyond.

From The Wall Street Journal ● Jan. 9, 2026

Accepting the possibility of disillusion as part of existence allows Amélie to endure sorrow and bask in moments of elation.

From Los Angeles Times ● Nov. 6, 2025

In stark contrast with the album’s bombastic, top-10 title track, the early version of “Born in the USA” featured on “Nebraska ’82” oozes with the pain, heartbreak and disillusion inherent in the song’s lyrics.

From Salon ● Oct. 24, 2025

Put them all together and there is a disillusion and a widespread sense among farmers of not being listened to.

From BBC ● Nov. 17, 2024

He did not want to disappoint or disillusion Tater, the way the real Duke had disillusioned Fred.

From "Dog Squad" by Chris Grabenstein

Coaches across the City said that the lack of care is another sign of a lack of support that disillusions prospective parents, which leads to enrollment somewhere else.

From Los Angeles Times ● Aug. 15, 2023

One key strength of this exhibition, curated by Elizabeth Cleland and Adam Eaker, is that it disillusions Tudor hagiography without making them seem uniquely brutal or awful.

From Washington Post ● Dec. 30, 2022

“What if that disillusions a lot of really bright, passionate, smart people from the industry?”

From New York Times ● Aug. 23, 2021

The rise of the “Beast-Elect” so disillusions her that she quits her job and breaks for the California badlands, where her friend’s teen-age daughter, Arabella, has gone missing.

From The New Yorker ● Nov. 13, 2018

It is possible that I was mistaken and I do not willfully invite any disillusions at this point in my life.

From "Nine Stories" by J. D. Salinger

But he soon became disillusioned when his new job was replaced -- by AI.

From Barron's ● Oct. 14, 2026

Dating apps like Bumble have come under pressure in recent years as some younger users have grown disillusioned with browsing for dates.

From BBC ● Oct. 13, 2026

But I feel so let down, so disillusioned.

From The Wall Street Journal ● Sep. 24, 2026

Meet the men who still love Bitcoin: Cryptocurrency’s power has declined, but it still holds a powerful allure to some people disillusioned with America’s economic system.

From Slate ● Sep. 21, 2026

A short time after the trial and conviction, one of Ames's disillusioned CIA colleagues reflected on the larger meaning of his capture and sentencing.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau

She added it was "disillusioning and disappointing that South Wales Police and the CPS demonstrated a lack of understanding" to what she said were the "unique stresses" of transitioning.

From BBC ● Jul. 14, 2025

This is disillusioning for a Lakers franchise that Hurley personally examined during his recent interview here, saw the best they had to offer, and said … nah.

From Los Angeles Times ● Jun. 10, 2024

She found the district’s attempt to do that this summer at the “well-resourced schools” meetings disillusioning.

From Seattle Times ● Nov. 14, 2023

The exhibition is as disillusioning about any reflexive association of the Renaissance with pervasive humanism as it is about the Tudors themselves.

From Washington Post ● Dec. 30, 2022

In light of the bold and defiant line we had taken all along, an appeal would seem anticli- mactic and even disillusioning.

From "Long Walk to Freedom" by Nelson Mandela

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