Synonyms of hallucination

hallucination

noun

hə-ˌlü-sə-ˈnā-shən 

1

as in dream

a conception or image created by the imagination and having no objective reality

were the voices real, or merely a hallucination?

Synonyms & Similar Words

• dream
• illusion
• daydream
• vision
• fantasy
• delusion
• unreality
• idea
• phantasm
• nightmare
• figment
• chimera
• mirage
• pipe dream
• castle in the air
• imaging
• castle in Spain
• conceit
• nonentity
• fiction
• fancy
• concoction
• visualization
• ignis fatuus
• utopia
• fabrication
• brainchild
• fable
• cloudland
• will-o'-the-wisp
• cloud-cuckoo-land
• invention
• envisaging
• Shangri-la
• daymare

Antonyms & Near Antonyms

• fact
• reality
• actuality

2

as in delusion

a false idea or belief

the common hallucination that gluttony during the holiday season doesn't have consequences

Synonyms & Similar Words

• delusion
• illusion
• myth
• error
• superstition
• misunderstanding
• misconception
• fallacy
• misbelief
• falsehood
• untruth
• falsity
• distortion
• fiction
• old wives' tale
• tale
• pretense
• lie
• misperception
• misinterpretation
• misrepresentation
• miscomprehension
• misjudgment
• inaccuracy
• misapprehension
• misstatement
• misinformation
• story
• factoid
• sophism
• sophistry
• half-truth
• fib
• misknowledge
• misreport

Antonyms & Near Antonyms

• truth
• verity

Synonym Chooser

How does the noun hallucination contrast with its synonyms?

Some common synonyms of hallucination are delusion, illusion, and mirage. While all these words mean "something that is believed to be true or real but that is actually false or unreal," hallucination implies impressions that are the product of disordered senses, as because of mental illness or drugs.

suffered from terrifying hallucinations

When is it sensible to use delusion instead of hallucination?

The words delusion and hallucination are synonyms, but do differ in nuance. Specifically, 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 illusion be used instead of hallucination?

Although the words illusion and hallucination have much in common, illusion implies a false ascribing of reality based on what one sees or imagines.

an illusion of safety

When is mirage a more appropriate choice than hallucination?

While in some cases nearly identical to hallucination, mirage in its extended sense applies to an illusory vision, dream, hope, or aim.

claimed a balanced budget is a mirage

Example Sentences

Recent Examples of hallucination

Language models can over-index on patterns that seem significant but aren't representative—a form of hallucination that looks like insight. —Polina Beletskaya, Forbes.com, 11 June 2026

Symptoms can include hot and dry skin, confusion, hallucination and disorientation, loss of consciousness, nausea or vomiting, difficulty breathing, fast or strong pulse, weakness or dizziness. —Jami Ganz, New York Daily News, 10 June 2026

Howell returned for hallucination sequences in season 9 and the series finale. —Rachel Labonte, Entertainment Weekly, 9 June 2026

Coffin diagnosed Murekezi with stimulant use disorder and schizoaffective disorder, which can include delusional and paranoid thoughts and auditory and visual hallucinations. —Nick Ferraro, Twin Cities, 8 June 2026