falsify

Verb

falsify (third-person singular simple present falsifies, present participle falsifying, simple past and past participle falsified)

1. (transitive) To alter so as to make false; especially when done with intent to deceive.
   • to falsify a record or document
   • The Irish bards use to forge and falsify everything as they list, to please or displease any man.1596 (date written; published 1633), Edmund Spenser, A Vewe of the Present State of Irelande […], Dublin: […] Societie of Stationers, […], →OCLC; republished as A View of the State of Ireland […]...
2. (transitive) To misrepresent.
3. (transitive) To counterfeit; to forge.
   • to falsify money
4. (transitive, otherwise archaic) To prove to be false.
   • By how much better than my word I am, / By so much shall I falsify men's hope.c. 1597 (date written), William Shakespeare, “The First Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and...
   • Hovv much greater confirmation of his faith vvould he have received, had he ſeen our Saviour's prophecy ſtand good in the deſtruction of the temple, and the diſſolution of the Jevviſh œconomy, vvhen Jevvs and Pagans united all their endeavours under Julian the Apoſtate, to baffle and falſify the...a. 1720 (date written), Joseph Addison, “Section VIII. Against Atheism and Infidelity.”, in The Evidences of the Christian Religion, […], London: […] J[acob] Tonson […], published 1730, →OCLC...
5. (transitive) To show (an item of charge inserted in an account) to be wrong.
   • It will allow the account to stand, with liberty to the plaintiff to surcharge and falsify it1833, Joseph Story, Commentaries on the Constitution of the United States
   • The chancery rules governing proceedings to surcharge and falsify accounts are applicable only where an account has been stated between the parties, or where something equivalent thereto has been done.1912, Peyton Boyle, The Federal Reporter: Cases Argued and Determined in the Circuit District Courts of the United States
6. (obsolete, transitive) To baffle or escape.
   • For disputants (as swordsmen use to fence / With blunted foyles) engage with blunted sense; / And as th' are wont to falsify a blow, / Use nothing else to pass upon a foe […]a. 1680, Samuel Butler, Fragments of an intended second part of the foregoing satire
7. (obsolete, transitive) To violate; to break by falsehood.
   • to falsify one's faith or word
   • he would not falsify his promise to Philanaxa. 1587, Philippe Sidnei [i.e., Philip Sidney], “(please specify the folio)”, in [Fulke Greville; Matthew Gwinne; John Florio], editors, The Countesse of Pembrokes Arcadia [The New Arcadia], London...