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[fawl-suh-fahy] /ˈfɔl sə faɪ/
verb (used with object), falsified, falsifying.
to make false or incorrect, especially so as to deceive:
to falsify income-tax reports.
to alter fraudulently.
to represent falsely:
He falsified the history of his family to conceal his humble origins.
to show or prove to be false; disprove:
to falsify a theory.
verb (used without object), falsified, falsifying.
to make false statements.
Origin of falsify
late Middle English
1400-50; late Middle English falsifien < Middle French falsifier < Late Latin falsificāre. See false, -ify
Related forms
falsifiable, adjective
falsifiability, noun
[fawl-suh-fi-key-shuh n] /ˈfɔl sə fɪˈkeɪ ʃən/ (Show IPA),
falsifier, noun
nonfalsifiable, adjective
unfalsifiable, adjective
unfalsified, adjective
1, 3. See misrepresent. 4. rebut, discredit, refute, confute, controvert. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for falsification
Contemporary Examples
Historical Examples
  • Was this coincidence, or prevision, or what Mr. Dessoir calls the 'falsification of memory'?


    Benjamin Taylor
  • Most of the cases that I heard turned on the adulteration and falsification of liquors.

  • The falsification of texts has always been the subject of complaint.

    The Hindu-Arabic Numerals David Eugene Smith
  • If lies were necessary, they would lie; where falsification was wanted, they falsified.

    Tristram of Blent Anthony Hope
  • He could not accuse her of the slightest deceit or falsification.

    The Tyranny of the Dark Hamlin Garland
  • Art is not the falsification of nature, but the fuller realization of it.

    The Gate of Appreciation Carleton Noyes
  • It is evidence which is open to no doubt and to no falsification.

    Lectures on Evolution Thomas Henry Huxley
  • Either the sonnet or the Virgilian note must be a falsification.

    The Works of Lord Byron, Volume 2 George Gordon Byron
British Dictionary definitions for falsification


verb (transitive) -fies, -fying, -fied
to make (a report, evidence, accounts, etc) false or inaccurate by alteration, esp in order to deceive
to prove false; disprove
Derived Forms
falsifiable, adjective
falsification (ˌfɔːlsɪfɪˈkeɪʃən) noun
falsifier, noun
Word Origin
C15: from Old French falsifier, from Late Latin falsificāre, from Latin falsusfalse + facere to make
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for falsification

1560s, from Late Latin falsificationem (nominative falsificatio), noun of action from past participle stem of falsificare (see falsify).



mid-15c., "to prove false," from Middle French falsifier (15c.), from Late Latin falsificare (see falsify). Meaning "to make false" is from c.1500. Earlier verb was simply falsen (c.1200). Related: Falsified; falsifying.

Online Etymology Dictionary, © 2010 Douglas Harper
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falsification in Medicine

falsification fal·si·fi·ca·tion (fôl'sə-fĭ-kā'shən)
The deliberate act of misrepresentation so as to deceive.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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