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 Described as more of a tonal companion to The Worm than a direct continuation, The Answerers is equal parts existential thriller and absurdist comedy, exploring belief, delusion and the human need for meaning in an increasingly turbulent modern world. —

Glenn Garner, Deadline, 30 Jan. 2026 If Bellinger is a $40 million-plus player, why not sign Bo Bichette, the younger, better player who frees the team from the Anthony Volpe delusion? —

Chris Kirschner, New York Times, 30 Jan. 2026 The therapist could practice on a person pretending to have delusions, though this is likely costly and logistically complicated to arrange. —

Lance Eliot, Forbes.com, 27 Jan. 2026 The neuropsychiatric effects of Huntington's disease include mood changes and altered thinking, such as hallucinations and delusions. —

Heidi Moawad, Verywell Health, 19 Jan. 2026 See All Example Sentences for delusion

Recent Examples of Synonyms for delusion

Noun

And the safety of inaction is an illusion.

— Brendan Keegan, Rolling Stone, 18 Feb. 2026
Lea Haddad's luscious, curly mane no doubt employs some invisible layers to lighten the load, but the overall appearance gives the illusion of the same sharp, heavy-ended finish created by blunt cuts.

— Krista Carter, InStyle, 17 Feb. 2026