hallucination
word
Definition
A hallucination is when you see, hear, or feel something that is not really there, often because of illness, drugs, or mental conditions.
Usage & Nuances
Used mainly in medical, psychological, and scientific contexts, but can appear informally. Common collocations: 'visual hallucination', 'auditory hallucination', 'suffer from hallucinations'. Do not confuse with 'illusion', which is a mistaken perception of something real.
Example Sentences
He mistook the shadow for a hallucination at first.
natural
He saw a hallucination of a cat in his room.
basic
A high fever can sometimes cause hallucinations.
basic
Some drugs may lead to hallucinations.
basic
People experiencing extreme stress may have vivid hallucinations.
natural
After staying awake for days, she started having strange hallucinations.
natural