Hallucinate

//həˈl(j)uːsɪneɪt// verb

verb ·Uncommon ·Advanced level

Definitions

Verb
  1. 1
    To seem to perceive things (with one or more of one's senses) which are not really present; to have visions; to experience a hallucination. ambitransitive
  2. 2
    perceive what is not there; have illusions wordnet
  3. 3
    To produce information that is not supported by the model's training data.

    "In case you were wondering, the yahoo url above doesn’t actually exist, the model just hallucinated it."

Synonyms

All synonyms
dreamfantasizefreak outimagineimaginesee things

Example

More examples

"Have you ever eaten anything that made you hallucinate?"

Etymology

First attested in 1604; borrowed from Latin hallūcinātus, alternative form of alūcinātus, perfect active participle of alucinor (“to dream”); see -ate (verb-forming suffix).

More for "hallucinate"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.