Word.ws English Dictionary

Last Thursdayism

Last Thursdayism proper noun: the proposition that the universe began to exist last Thursday, with the appearance of age and history.

Proper noun

Last Thursdayism

  1. The proposition that the universe began to exist last Thursday, with the appearance of age and history.
    • The statement is on the order of Last Thursdayism; it can never be proven or disproven.1991 June 3, Ken Arromdee, “Re: Firewalking”, in sci.skeptic (Usenet), retrieved 30 Sep 2010, message-ID <10836@emanon.cs.jhu.edu>
    • Any memories you might have of the past were created in your head when you were created, just as the fossils were placed in the rocks to look as if they were from the ancient past. This idea is nicknamed “Last Thursdayism” by the famous philosopher Bertrand Russell as in “the world might have been...2007 December 15, Donald R. Prothero, “The Nature of Science”, in Evolution: what the fossils say and why it matters, New York: Columbia University Press, →ISBN, page 9

Origin of Last Thursdayism

From last Thursday + -ism.

Questions about Last Thursdayism

What does Last Thursdayism mean?
Last Thursdayism means the proposition that the universe began to exist last Thursday, with the appearance of age and history.
What part of speech is Last Thursdayism?
Last Thursdayism is a proper noun.

Words near Last Thursdayism in the dictionary

  1. Last Supper
  2. Last Suppers
  3. last survivor
  4. last thing
  5. last thing one needs
  6. Last Thursdayism
  7. last time
  8. last time I checked
  9. last to last
  10. last trump
  11. last trumpet

Source and license

Adapted from Wiktionary: Last Thursdayism (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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