Hallucinate

/həˈluː.sɪ.neɪt/

Meaning & Definition

verb
to see, hear, or experience something that is not present or real, typically as a result of a mental disorder, drug use, or extreme fatigue.
After staying awake for three days, he began to hallucinate and imagined there were people in the room.
to perceive something in a way that is not based on actual external stimuli.
During his fever, he would hallucinate strange shapes and voices in the dark.
to experience a hallucination.
Some patients may hallucinate due to the effects of certain medications.

Etymology

From Latin 'hallucinari', meaning 'to wander in the mind'.

Common Phrases and Expressions

seeing things
Experiencing visual hallucinations.
on a trip
Referring to drug-induced hallucinations.
lost in thought
Engaging in a daydream or mental distraction that may feel real.

Related Words

illusion
A false idea or belief; a deceptive appearance.
delusion
A persistent false belief regarding the self or persons or objects outside the self.

Slang Meanings

Tripping
He was tripping on acid and started to hallucinate.
Freaking out
After taking the drug, he was just freaking out and hallucinating.