9 Grammatical Pitfalls


[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. 2015.
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Examples from the web for falsifiable
  • The first is the distinction between a claim that is falsifiable and a claim that has been falsified.
  • There is no report of a falsifiable component, such as a group where uncertainty was increased rather than decreased.
  • They can't be called theories, since theories must be falsifiable.
  • Now, having said that, a theory does not have to be falsifiable in order to be a valid theory.
  • Science deals with that which is empirically falsifiable, all else falls within the realm of philosophy.
  • Evolution, first and foremost, is a falsifiable scientific theory explaining the how life adapts and grows in its environment.
  • Untestable and non-falsifiable theories are outside the realm of science.
  • Science deals with the here and now: observable, testable, and falsifiable.
  • The purpose of science is to delineate objective, empirical and falsifiable evidence in support of hypotheses.
  • The problem is that his evidence is so non-falsifiable.
British Dictionary definitions for falsifiable


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 falsifiable

1610s, from falsify + -able. Related: Falsifiability.



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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