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From French falsifier, from Late Latin falsificāre, present active infinitive of falsificō ‎(make false, corrupt, counterfeit, falsify), from Latin falsificus, from falsus ‎(false), corresponding to false +‎ -ify.



falsify ‎(third-person singular simple present falsifies, present participle falsifying, simple past and past participle falsified)

  1. (transitive) To alter so as to make false; to make incorrect.
    to falsify a record or document
    • Spenser
      The Irish bards use to forge and falsify everything as they list, to please or displease any man.
  2. (transitive) To misrepresent.
  3. (transitive) To prove to be false.
    • Shakespeare
      By how much better than my word I am, / By so much shall I falsify men's hope.
    • Addison
      Jews and Pagans united all their endeavors, under Julian the apostate, to baffle and falsify the prediction.
  4. (transitive) To counterfeit; to forge.
    to falsify coin
  5. (transitive, finance) To show, in accounting, (an item of charge inserted in an account) to be wrong.
    (Can we find and add a quotation of Story to this entry?)
    (Can we find and add a quotation of Daniell to this entry?)
  6. (transitive, obsolete) To baffle or escape.
    • Samuel Butler
      For disputants (as swordsmen use to fence / With blunted foyles) engage with blunted sense; / And as th' are wont to falsify a blow, / Use nothing else to pass upon a foe []
  7. (transitive, obsolete) To violate; to break by falsehood.
    to falsify one's faith or word
    (Can we find and add a quotation of Sir Philip Sidney to this entry?)

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