Etymology

disconfirm

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Today it means: To establish the falsity of a claim or belief; to show or to tend to show that a theory or hypothesis is not valid. Full definition →

English confirm ← Middle English dis- ← Latin dis-
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The story

  1. Latindis-
  2. Old Frenchdes-
  3. Latindis-
  4. Middle Englishdis-
  5. Englishdis-
  6. Englishconfirm
  7. English todaydisconfirm

From dis- + confirm.

Etymology from Wiktionary, CC BY-SA 4.0.