DELUSION Synonyms: 75 Similar and Opposite Words

Q: How does the noun 'delusion' contrast with its synonyms?

Some common synonyms of delusion are hallucination , illusion , and mirage . While all these words mean "something that is believed to be true or real but that is actually false or unreal," delusion implies an inability to distinguish between what is real and what only seems to be real, often as the result of a disordered state of mind. // delusions of persecution

Q: When can 'hallucination' be used instead of 'delusion'?

While in some cases nearly identical to delusion , hallucination implies impressions that are the product of disordered senses, as because of mental illness or drugs. // suffered from terrifying hallucinations

Q: Where would 'illusion' be a reasonable alternative to 'delusion'?

The synonyms illusion and delusion are sometimes interchangeable, but illusion implies a false ascribing of reality based on what one sees or imagines. // an illusion of safety

Q: When is it sensible to use 'mirage' instead of 'delusion'?

The words mirage and delusion can be used in similar contexts, but mirage in its extended sense applies to an illusory vision, dream, hope, or aim. // claimed a balanced budget is a mirage

delusion

noun

di-ˈlü-zhən

Definition of delusion next

as in illusion

a conception or image created by the imagination and having no objective reality her idea that her new man is a long lost prince is surely just a delusion

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in myth

a false idea or belief he appears to suffer from the delusion that he's the best reporter in the business

Synonyms & Similar Words

Antonyms & Near Antonyms

truth
verity

Synonym Chooser

How does the noun delusion contrast with its synonyms?

Some common synonyms of delusion are hallucination, illusion, and mirage. While all these words mean "something that is believed to be true or real but that is actually false or unreal," delusion implies an inability to distinguish between what is real and what only seems to be real, often as the result of a disordered state of mind.

delusions of persecution

When can hallucination be used instead of delusion?

While in some cases nearly identical to delusion, hallucination implies impressions that are the product of disordered senses, as because of mental illness or drugs.

suffered from terrifying hallucinations

Where would illusion be a reasonable alternative to delusion?

The synonyms illusion and delusion are sometimes interchangeable, but illusion implies a false ascribing of reality based on what one sees or imagines.

an illusion of safety

When is it sensible to use mirage instead of delusion?

The words mirage and delusion can be used in similar contexts, but mirage in its extended sense applies to an illusory vision, dream, hope, or aim.

claimed a balanced budget is a mirage

Example Sentences

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Recent Examples of delusion The attacker, an African American woman named Izola Ware Curry, suffered from paranoid delusions and was found incompetent to stand trial for the crime. —

Indianapolis Star, IndyStar, 16 Jan. 2026 Reiner has been diagnosed with schizophrenia or schizoaffective disorder, similar mental health conditions that can involve delusions, paranoia, hallucinations and mood swings. —

Joseph Wilkinson, Mercury News, 16 Jan. 2026 Eventually, Daniel’s delusions became nihilistic. —

Maggie Harrison Dupré, Futurism, 15 Jan. 2026 However, the verdict was later reversed, and in July 2006, she was found not guilty by reason of insanity after a jury agreed with defense attorneys that the former nurse suffered from postpartum depression and postpartum psychosis — a rare disorder that can cause delusions and hallucinations. —

Christine Pelisek, PEOPLE, 14 Jan. 2026 See All Example Sentences for delusion

Recent Examples of Synonyms for delusion

Noun

Abbadon has also received a similar illusion based nerf to his Curse of Avernus which should also tone him down a bit as well.

— Mike Stubbs, Forbes.com, 22 Jan. 2026
Beware the illusion of the open world.

— Sadie Sartini Garner, Pitchfork, 21 Jan. 2026