Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • intransitive verb To state untruthfully; misrepresent.
  • intransitive verb To make false by altering or adding to.
  • intransitive verb To counterfeit; forge.
  • intransitive verb To declare or prove to be false.
  • intransitive verb To make untrue statements; lie.

from The Century Dictionary.

  • To make false or deceptive; cause to vary from truth or genuineness; change so as to deceive; sophisticate; adulterate; misrepresent: as, to falsify accounts, weights and measures, or commodities; to falsify a person's meaning.
  • To make a false representation of; counterfeit; forge.
  • To show to be erroneous or incorrect; disprove: as, the event falsified his words.
  • To violate; break by falsehood or treachery: as, to falsify one's faith or word.
  • To cause to fail or become false; baffle; make useless: as, to falsify a person's aim.
  • To feign, as a blow. Same as false, v. t., 5.
  • In law: To prove to be false, as a judgment; avoid or defeat.
  • In equity, to show to be erroneous, as an item claimed on the credit side of an account.
  • To tell falsehoods; lie; violate the truth.
  • noun In fencing, a feint; a baffling thrust.

from the GNU version of the Collaborative International Dictionary of English.

  • intransitive verb To tell lies; to violate the truth.
  • transitive verb To make false; to represent falsely.
  • transitive verb To counterfeit; to forge.
  • transitive verb To prove to be false, or untrustworthy; to confute; to disprove; to nullify; to make to appear false.
  • transitive verb To violate; to break by falsehood.
  • transitive verb To baffle or escape.
  • transitive verb (Law) To avoid or defeat; to prove false, as a judgment.
  • transitive verb (Equity) To show, in accounting, (an inem of charge inserted in an account) to be wrong.
  • transitive verb To make false by multilation or addition; to tamper with.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb transitive To alter so as to be false; to make incorrect.
  • verb transitive To misrepresent.
  • verb transitive To prove to be false.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb prove false
  • verb falsify knowingly
  • verb insert words into texts, often falsifying it thereby
  • verb make false by mutilation or addition; as of a message or story
  • verb tamper, with the purpose of deception

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English falsifien, from Old French falsifier, from Late Latin falsificāre : Latin falsus, false; see false + Latin -ficāre, -fy.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From French falsifier, from Late Latin falsificāre, present active infinitive of falsificō ("make false, corrupt, counterfeit, falsify"), from Latin falsificus, from falsus ("false"), corresponding to false +‎ -ify.

Examples

  • Also, as pointed out before, if we are able to find an object of sufficient mass within the Schwarzschild radius, which normally would continue to collapse into a gravitational singularity (Black Hole) but has not, that would disprove the theory of Black holes right there, or in other words falsify them.

    Conservapedia - Recent changes [en]

  • Also, as pointed out before, if we are able to find an object of sufficient mass within the Schwarzschild radius, which normally would continue to collapse into a gravitational singularity (Black Hole) but has not, that would disprove the theory of Black holes right there, or in other words falsify them.

    Conservapedia - Recent changes [en]

  • Also, as pointed out before, if we are able to find an object of sufficient mass within the Schwarzschild radius, which normally would continue to collapse into a gravitational singularity (Black Hole) but has not, that would disprove the theory of Black holes right there, or in other words falsify them.

    Conservapedia - Recent changes [en]

  • Also, as pointed out before, if we are able to find an object of sufficient mass within the Schwarzschild radius, which normally would continue to collapse into a gravitational singularity (Black Hole) but has not, that would disprove the theory of Black holes right there, or in other words falsify them.

    Conservapedia - Recent changes [en]

  • Instead, he argues that the logic of scientific research is a critical method in which scientists do their best to "falsify" their hypotheses and theories.

    Revisiting Popper

  • Instead, he argues that the logic of scientific research is a critical method in which scientists do their best to "falsify" their hypotheses and theories.

    Archive 2009-08-01

  • It looks like you have addressed T&G's main arguments (eg, about the 2nd law), but I wonder if it might be appropriate to put in a brief description of what it means to "falsify" something in the scientific sense -- ie, essentially what T&G must show (and failed to show) to make their case that there is no greenhouse effect:

    Rabett Run

  • I didn't use the word "falsify", I used the word "disconfirming" … they are not necessarily the same thing.

    Congratulations are in Order

  • If these 'actions' please them, the investigating officers would then "falsify" their investigation results all the way up to make our unit look good.

    Chen's Speech on the Recall

  • Which brings me to if we are able to find an object of sufficient mass within the Schwarzschild radius, which normally would continue to collapse into a gravitational singularity (Black Hole) but has not, that would disprove the theory of Black holes right there, or in other words falsify them. "

    Conservapedia - Recent changes [en]

Comments

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