fal ‧ si ‧ fy /ˈfɔːlsəfaɪ, ˈfɔːlsɪfaɪ $ ˈfɒːl-/ BrE AmE verb ( past tense and past participle falsified , present participle falsifying , third person singular falsifies ) [transitive]
to change figures, records etc so that they contain false information:
The file was altered to falsify the evidence.
—falsification /ˌfɔːlsəfəˈkeɪʃ ə n, ˌfɔːlsɪfəˈkeɪʃ ə n $ ˌfɒːl-/ noun [uncountable and countable] :
the falsification of records