Word.ws English Dictionary

conjunction fallacy

conjunction fallacy noun: the contradictory statement that the conjunction of two possibilities is more probable than one or both of those possibilities independently.

Noun

conjunction fallacy (uncountable)

  1. The contradictory statement that the conjunction of two possibilities is more probable than one or both of those possibilities independently.
    • Could the conjunction fallacy rest on students interpreting the experimental instructions in an unexpected way - misunderstanding, perhaps, what is meant by "probable"?2007 September 19, Eliezer Yudkowsky, “Conjunction Fallacy”, in LessWrong, archived from the original on 03 Feb 2026

Questions about conjunction fallacy

What does conjunction fallacy mean?
Conjunction fallacy means the contradictory statement that the conjunction of two possibilities is more probable than one or both of those possibilities independently.
What part of speech is conjunction fallacy?
Conjunction fallacy is a noun.

Words near conjunction fallacy in the dictionary

  1. conjumbles
  2. conjumbling
  3. conjuncatenation
  4. conjunct
  5. conjunction
  6. conjunction fallacy
  7. conjunctional
  8. conjunctional phrase
  9. conjunctional phrases
  10. conjunctionally
  11. conjunctionless

Source and license

Adapted from Wiktionary: conjunction fallacy (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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