Find Synonyms

hallucination Synonyms

Another word for hallucination

Choosing another word for hallucination depends on context, so the 18 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• noun (Context 1)

A sensory experience of something that does not exist outside the mind, typically caused by a neurological or psychiatric condition, high fever, or psychoactive drugs.

Usage Example

"Severe sleep deprivation can occasionally trigger auditory or visual hallucinations in healthy individuals."

Strong
mirage
apparition
phantasm
figment
phantom
illusion
vision
chimera
Weak
daydream

• noun (Context 2)

A plausible-sounding but false, fabricated, or nonsensical response generated by an artificial intelligence model.

Usage Example

"Researchers are developing new verification techniques to reduce the rate of hallucinations in large language models."

Strongest
confabulation
Strong
fabrication
falsehood
Weak
inaccuracy

• noun (Context 3)

An unfounded, mistaken, or delusional belief or impression.

Usage Example

"The investor's belief that the failing company would double its value overnight proved to be a costly delusion."

Strongest
delusion
Strong
illusion
pipe dream
fantasy
fallacy
misconception
chimera

Opposites of hallucination

The opposite of hallucination shifts depending on context. Common opposites include:

reality
certainty
fact
verity
truth
See all opposites of hallucination

Cite this Entry


Wordmom. (2026). Synonyms for Hallucination. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/hallucination
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