To state untruthfully; misrepresent. 2. a. To make false by altering or adding to: falsify testimony. b. To counterfeit; forge: falsify a visa. 3. To declare or prove to be false. To make untrue statements; lie. [Middle English falsifien, from Old French falsifier, from Late Latin falsificāre : Latin falsus, false; see false + Latin -ficāre, -fy.] More @Wikipedia
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