-ˌfī verb
( -ed/-ing/-es )
Etymology: Middle English falsifien, from Middle French falsifier, from Medieval Latin falsificare, from Latin falsus false + -ificare -ify — more at false
transitive verb
1. : to prove to be false : confute
other records or traces which seemed to falsify the hypothesis based on the records that I found — H.N.Lee
specifically : to prove false so as legally to avoid, defeat, or rectify
falsify a judgment
2.
a. : to make false by mutilation or addition : tamper with
falsify a passport
falsify a will
b. : counterfeit , forge , adulterate
producing falsified champagne for sale to hotels
3. obsolete : to cause (as one's word) to be violated or betrayed
4. : to prove unsound or untrue by experience : disappoint , frustrate
its spacious promises of a new era have almost every one of them been falsified — W.M.Citrine
5. : to represent falsely : misrepresent , distort
contended that the history of early Virginia had been falsified by the Court party in England — T.J.Wertenbaker
a low-priced sunglass lens said to be completely effective without falsifying the colors seen through it — Newsweek
the novelist has distorted the characters and falsified their motives — Bernard De Voto
intransitive verb
1. : to violate the truth : tell lies
impressed with the fact that he has falsified in his answer — H.G.Armstrong
2. : to engage in misrepresentation or distortion
his account falsifies from beginning to end