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self-delusion

American  
[self-di-loo-zhuhn, self-] / ˈsɛlf dɪˈlu ʒən, ˌsɛlf- /

noun

  1. the act or fact of deluding oneself.


self-delusion British  

noun

  1. the act or state of deceiving or deluding oneself

"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

Etymology

Origin of self-delusion

First recorded in 1625–35

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:

Critics say the trend encourages self-centeredness and self-delusion and ruins families.

From The Wall Street Journal ● Sep. 26, 2026

See above re: superhuman levels of self-delusion that typically function as an asset.

From Slate ● Jul. 24, 2025

There’s very little she says in “Chimp Crazy” to the lawyers and judges hounding that’s true, but the biggest whoppers she tells highlight her self-delusion.

From Salon ● Aug. 18, 2024

Those tour de force scenes are a reminder of Fisher’s canny ear for the specific cadence of Angelenos fully immersed in the twinned make-believe worlds of moviemaking and self-delusion.

From Los Angeles Times ● Apr. 8, 2024

If art was no more than a frustrated outflinging of desire, if religion was no more than self-delusion, what good was life?

From "The Martian Chronicles" by Ray Bradbury

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