falsify

[fawl-suh-fahy]
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verb (used with object), fal·si·fied, fal·si·fy·ing.

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), fal·si·fied, fal·si·fy·ing.

to make false statements.

Nearby words

  1. falsework,
  2. falsie,
  3. falsies,
  4. falsifiable,
  5. falsification,
  6. falsity,
  7. falstaff,
  8. falstaffian,
  9. falster,
  10. faltboat

Origin of falsify

1400–50; late Middle English falsifien < Middle French falsifier < Late Latin falsificāre. See false, -ify

SYNONYMS FOR falsify
1, 3. See misrepresent. 4. rebut, discredit, refute, confute, controvert.

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for falsifiability

falsify

verb -fies, -fying or -fied (tr)

to make (a report, evidence, accounts, etc) false or inaccurate by alteration, esp in order to deceive
to prove false; disprove
Derived Formsfalsifiable, adjectivefalsification (ˌfɔːlsɪfɪˈkeɪʃən), nounfalsifier, noun

Word Origin for falsify

C15: from Old French falsifier, from Late Latin falsificāre, from Latin falsus false + 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

Word Origin and History for falsifiability

falsify

v.

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