Dictionary.com
Thesaurus.com
Synonyms

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

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

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:

"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

Blanche is just the latest person to delude himself this way.

From Salon May 2, 2024

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

But maybe it’s impossible to separate the reckless carnival barker who deludes himself and others from the bold ideas that really are helping to change the world for the better.

From New York Times Aug. 3, 2021

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

I’m trying to embrace the fact that everyone deludes themselves about some things.

From Slate Apr. 27, 2016

Just such a course of reasoning deludes all who forget that the goodness of God leadeth to repentance.

From The Expositor's Bible: The Book of Exodus by G. A. Chadwick

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

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

His direct, pragmatic approach has seduced voters, but has it deluded him into thinking that he has all the answers?

From Los Angeles Times Nov. 13, 2025

He’d continued down to the beach still unaffected, the bad news acting with a kind of discretion, allowing him these last few peaceful, deluded moments.

From "Middlesex: A Novel" by Jeffrey Eugenides

There could be “huge social ruptures where one side sees the other as very cruelly exploiting AI while the other side sees the first as deluding itself into thinking there’s sentience there,” he said.

From Salon Jun. 10, 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

My blood - painfully milked out of my index finger - will determine whether I have been deluding myself too.

From BBC Nov. 12, 2022

If she is not, I have been sadly deluding myself.

From "Nine Stories" by J. D. Salinger

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training