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delude

American  
[dih-lood] / dɪˈlud /

verb (used with object)

  • deludes,
    present (3rd person singular)
  • deluded,
    past participle,  past
  • deluding
    present participle
  1. to mislead the mind or judgment of; deceive.

    His conceit deluded him into believing he was important.

    Synonyms:
    gull, defraud, cheat, dupe, cozen, beguile
  2. Obsolete. to mock or frustrate the hopes or aims of.

  3. Obsolete. to elude; evade.


delude British  
/ dɪˈluːd /

verb

  1. to deceive the mind or judgment of; mislead; beguile

  2. rare to frustrate (hopes, expectations, etc)

"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 delude

First recorded in 1400–50; late Middle English deluden, from Latin dēlūdere “to play false,” equivalent to dē- de- + lūdere “to play”


Explanation

To delude is to trick or fool, often in relation to yourself. If you delude yourself into thinking your mom's chocolate cake is low in fat, you'll be disappointed to find out it's made with two sticks of butter! If you delude someone into thinking something, you are making a fool of them, or making them foolish. The word shares a root with ludicrous which means completely ridiculous. The thing that you foolishly believe is a delusion. Someone with delusions of grandeur has deluded themselves into thinking they are very, very special.

Keep Reading on Vocabulary.com

Vocabulary lists containing delude

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:

"To cheat, trick, deceive, delude with false pretences; to impose upon, take in, hoax."

From BBC ● Sep. 29, 2026

"People delude themselves that the human race is so clever that we'll come up with some wonderful technology that'll make this all go away."

From Barron's ● Aug. 3, 2026

Some people delude themselves into thinking they’re financially independent when they’re not.

From MarketWatch ● Jul. 12, 2026

“We delude ourselves, too, if we think that power will accumulate safely and only in the hands of dispassionate ‘people . . . found in agencies.’”

From The Wall Street Journal ● Feb. 22, 2026

People delude themselves in all sorts of ways.

From "The Invention of Science" by David Wootton

She concocts a fantasy, one that Arthur deludes himself into believing.

From Salon ● Oct. 12, 2024

OCD deludes you into thinking that you can protect yourself with an ironclad grip over your reality, but that’s impossible.

From Slate ● Feb. 23, 2023

After Strane is accused by a more recent student on social media, Vanessa is cornered: She faces or almost faces the ways she has been deluding herself, and then she deludes herself again.

From New York Times ● Mar. 6, 2020

Perhaps May also deludes herself that the present moment is especially propitious for a renewal of “our special relationship”.

From The Guardian ● Feb. 14, 2017

Some can speak, And call the heavens to record, when their fancy, Mere planet-struck, has fix'd their influence On various objects: this deludes poor wenches, And makes them melt like ceruse!

From A Select Collection of Old English Plays Volume 14 of 15 by Robert Dodsley

Pauling may never be fully vindicated, but neither was he simply deluded.

From Science Daily ● Aug. 7, 2026

If that’s the case, he is more deluded than he seems to think the rest of us are.

From Slate ● Apr. 30, 2026

Anderson’s film is nowhere near as bad, but it’s as deluded about reality and self-important about its perspective as “Crash” was.

From Los Angeles Times ● Mar. 17, 2026

But he is also so paranoid, deluded and consumed with self-loathing that throughout this caustically witty novel we can’t help but root for him every step of the way.

From The Wall Street Journal ● Jan. 2, 2026

“Indeed. It never does. And it will not ever again. I must have been deluded when she first came to us, wanting to enter our Order. I shall be more discerning next time.”

From "The Girl Who Drank the Moon" by Kelly Barnhill

It comes with the territory and anyone who thinks it doesn't is deluding themselves.

From BBC ● Jun. 24, 2025

“But I think really they will be deluding themselves if they think that that bodes well for the next general election.”

From Washington Times ● Jul. 21, 2023

Carrigan: The dinner scene between Hank and the Raven, when the Raven is just baffled that Hank is deluding himself into not being responsible for Cristobal’s death.

From Los Angeles Times ● May 24, 2023

Is she deluding herself and unable to face reality, or is her "performance" all about control and maintaining power?

From Salon ● Sep. 11, 2022

If she was deluding herself, at least it would allow her to get through this awful day.

From "Scythe" by Neal Shusterman

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