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.
Origin of falsify
Synonyms for falsify
1, 3. See misrepresent. 4. rebut, discredit, refute, confute, controvert.
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