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dis- +‎ confirm

Verb edit

disconfirm (third-person singular simple present disconfirms, present participle disconfirming, simple past and past participle disconfirmed)

  1. (transitive) To establish the falsity of a claim or belief; to show or to tend to show that a theory or hypothesis is not valid.
    • 1943, Carl G. Hempel, “A Purely Syntactical Definition of Confirmation”, in The Journal of Symbolic Logic, volume 8, number 4, page 122:
      The empirical data obtained in a test—or, as we shall prefer to say, the observation sentences describing those data—may then either confirm or disconfirm the given hypothesis, or they may be neutral with respect to it.

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