Hallucinate means to perceivebecome aware of through the senses or the mind something that is not really there, often because of illness, drugs, exhaustion, or a strong mental disturbancea troubling disruption of normal mental or physical functioning. It can also be used more generally for seeing, hearing, or sensing things that have no real externalcoming from outside; not inside the body or mind source.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-25. AI assessment; not a guarantee of accuracy.
Pronunciation
AI-generated pronunciation audio (OpenAI).
Accent: General American English
IPA: /həˈluːsəˌneɪt/
Easy pronunciation: huh-LOO-suh-nayt (approximate spelling).
Stress: Primary stress on LOO, with secondary stress on NAYT.
Used as a verb meaning to see, hear, or sense something that is not real.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-25. AI assessment; not a guarantee of accuracy.
Hallucinate Meaning
to see, hear, or sense something that isn’t real
Part of speech: verb
Definition: to perceive something that is not there; to have an illusion
Example: After being awake for two days, he started to hallucinate shapes in the dark.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-25. AI assessment; not a guarantee of accuracy.
Common Mistakes
- People sometimes use hallucinate loosely to mean 'imagine' or 'make up,' but the word specifically refers to perceiving something unreal as if it were real.
- Do not confuse hallucinate with 'delusion,' which usually refers to a false belief rather than a false perception.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-25. AI assessment; not a guarantee of accuracy.
Frequently Asked Questions
What does hallucinate mean in simple English?
It means to see, hear, or otherwise sense something that is not really there.
Is hallucinate always about drugs or mental illness?
No. Those are common causes, but a person can also hallucinate because of fever, sleep deprivation, or other medical reasons.
What is a good synonym for hallucinate?
A close synonym is 'have an illusion,' though there is no perfect everyday one-word substitute in all contexts.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-25. AI assessment; not a guarantee of accuracy.