Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • intransitive verb To undergo hallucination.
  • intransitive verb To cause to have hallucinations.

from The Century Dictionary.

  • To blunder.
  • To affect with hallucination.

from the GNU version of the Collaborative International Dictionary of English.

  • transitive verb To experience (something nonexistent) as an hallucination{2}.
  • intransitive verb rare To wander; to go astray; to err; to blunder; -- used of mental processes.
  • intransitive verb To perceive a non-existent object or phenomenon; to believe that one is experiencing something which in reality does not exist; to experience a hallucination{2}.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb To imagine and dream unreal things. To have visions; To experience a hallucination.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb perceive what is not there; have illusions

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin hallūcinārī, hallūcināt-, to dream, be deceived, variant of ālūcinārī.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin hallucinatus, hallucinari (to dream).

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Examples

  • Hell, it’s the one you probably hallucinate is what you’re hoping for by dissing people for things that you, not they, necessarily read into the Confederate flag, viz., the shock KJ had to realize that an African-American woman would actually hug a friend of hers who was wearing the t-shirt.

    Matthew Yglesias » Pro-Slavery 2010

  • While night terrors are common among young children, and my overactive imagination lead me to "hallucinate" images of the Virgin Mary with a pig nose on my bookcase, my parents were planning to pack me up to the mental hospital.

    Archive 2009-04-01 floreta 2009

  • While night terrors are common among young children, and my overactive imagination lead me to "hallucinate" images of the Virgin Mary with a pig nose on my bookcase, my parents were planning to pack me up to the mental hospital.

    From Atheism to Agnosticism floreta 2009

  • Apparently this finding was obtained around 50 years ago when researchers saw that people who had been sleep deprived started to 'hallucinate'.

    WordPress.com News 2008

  • You should never set out to destroy the left or right, or conquer evil or good, because it will make you hallucinate delusions of self-importance.

    The Bushman Way of Tracking God PhD Bradford Keeney 2010

  • We were warned and told that Mescal can cause one to hallucinate in route to getting the magical worm.

    What happened to the worm, in Mezcal? 2009

  • We were warned and told that Mescal can cause one to hallucinate in route to getting the magical worm.

    What happened to the worm, in Mezcal? 2009

  • Being on acid doesn't make you hallucinate so much as make everything super-real.

    Molecules Joe Deir 2011

  • Ms. Kissel's five-day testimony was frequently interrupted by episodes in which she broke down into tears and at times appeared to hallucinate seeing her dead husband.

    Hong Kong Jury Finds American Expatriate Nancy Kissel Guilty of Murder Allison Morrow 2011

  • Sandie Shaw steals the show, dressed in a fringed pink Union Jack-patterned robe and mini-shorts, the kind of thing you might well hallucinate on acid.

    Meltdown round-up – review 2011

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