delusion

[dih-loo-zhuhn] / dɪˈlu ʒən /

NOUN

misconception, misbelief

Synonyms

STRONGEST

deception fantasy hallucination illusion pipe dream

STRONG

apparition blunder casuistry chicanery daydream deceptiveness dream error fallacy fancy figment ghost lapse mirage misapprehension mistake oversight phantasm phantom self-deception shade speciousness spuriousness trickery trip vision

WEAK

eidolon false impression fool's paradise head trip ignis fatuus optical illusion

Antonyms

STRONGEST

fact reality truth

STRONG

accuracy actuality being certainty correction fix honesty right success

WEAK

surety

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.

John Carney directs a musical dramedy starring the actor and Nick Jonas in a story of ambition, delusion and betrayal.

From The Wall Street Journal • May 28, 2026

"Any delusion of full decoupling isn't realistic on any near-term horizon", she told AFP.

From Barron's • May 13, 2026

Astrology was just the vessel that shaped the delusion, not its cause.

From Slate • May 5, 2026

In his research, social psychologist Luke Nicholls tested five AI models with simulated conversations developed by psychologists, and found Grok was the most likely to lead to delusion.

From BBC • May 2, 2026

She blinked hard, expecting them to disappear, for them to be a delusion brought on by her first sickness in nearly a hundred years.

From "Night Owls" by A.R. Vishny

Vocabulary lists containing delusion

Night

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Stargirl

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