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.
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Origin of falsify
SYNONYMS FOR falsify
1, 3. See misrepresent. 4. rebut, discredit, refute, confute, controvert.
fal·si·fi·a·ble, adjectivefal·si·fi·a·bil·i·ty, nounfal·si·fi·ca·tion [fawl-suh-fi-key-shuh n] /ˈfɔl sə fɪˈkeɪ ʃən/, nounfal·si·fi·er, noun
non·fal·si·fi·a·ble, adjectiveun·fal·si·fi·a·ble, adjectiveun·fal·si·fied, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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
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
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