hallucinate.
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.
Meaning & usage
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.
To produce information that is not supported by the model's training data.
Where this word comes from
First attested in 1604; borrowed from Latin hallūcinātus, alternative form of alūcinātus, perfect active participle of alucinor (“to dream”); see -ate (verb-forming suffix).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.