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falsify

verb [T]
 
 
/ˈfɒl.sɪ.faɪ/ US  /ˈfɑːl-/ disapproving

Definition

to change something, such as a document, in order to deceive people: The certificate had clearly been falsified.Faking and pretending falsification
 
 
/ˌfɒl.sɪ.fɪˈkeɪ.ʃən/ US  /ˌfɑːl-/ noun [U]
falsification of evidenceLies, lying and hypocrisyDishonest people
(Definition of falsify verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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