falsify

/ˈfɔːlsəfaɪ/
verb
  1. To change information, evidence, or a document in order to deceive someone; to make something false.
    • The accountant was caught trying to falsify the company's tax returns.
    • It is illegal to falsify a passport or other official identification.
    • The journalist falsified quotes to make the story more dramatic.
  2. To prove that a statement, theory, or claim is false.
    • New evidence may falsify the long-held belief that the Earth is flat.
    • The scientist's goal was to falsify the competing theory with clear data.
    • The experiment was designed to falsify the hypothesis, not to confirm it.