falsify

[fawl-suh-fahy]
verb (used with object), falsified, falsifying.
1.
to make false or incorrect, especially so as to deceive: to falsify income-tax reports.
2.
to alter fraudulently.
3.
to represent falsely: He falsified the history of his family to conceal his humble origins.
4.
to show or prove to be false; disprove: to falsify a theory.
verb (used without object), falsified, falsifying.
5.
to make false statements.

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

falsifiable, adjective
falsifiability, noun
falsification [fawl-suh-fi-key-shuhn] , noun
falsifier, noun
nonfalsifiable, adjective
unfalsifiable, adjective
unfalsified, adjective


1, 3. See misrepresent. 4. rebut, discredit, refute, confute, controvert.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
falsify (ˈfɔːlsɪˌfaɪ)
 
vb , -fies, -fying, -fied
1.  to make (a report, evidence, accounts, etc) false or inaccurate by alteration, esp in order to deceive
2.  to prove false; disprove
 
[C15: from Old French falsifier, from Late Latin falsificāre, from Latin falsusfalse + facere to make]
 
'falsifiable
 
adj
 
falsification
 
n
 
'falsifier
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

falsify
mid-15c., "to prove false," from Fr. falsifier, from L.L. falsificare, from L. falsificus "making false," from falsus (see false). Related: Falsified; falsifying. Meaning "to make false" is from c.1500.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The models are then tested, and experiments confirm or falsify theoretical
  models of how the world works.
People will repeatedly devise tests that give positive proofs of their
  theories, but much less often devise tests to falsify them.
She also had a doctor willing to falsify a birth certificate.
And then these forms, far from crystallizing or sharpening experience, can
  falsify or be felt as a burden.
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