1. To make false; to represent falsely.
  2. To counterfeit; to forge; as, to falsify coin.
  3. To prove to be false, or untrustworthy; to confute; to disprove; to nullify; to make to appear false.
  4. To violate; to break by falsehood; as, to falsify one's faith or word.
  5. To baffle or escape; as, to falsify a blow.
  6. To avoid or defeat; to prove false, as a judgment.
  7. To show, in accounting, (an inem of charge inserted in an account) to be wrong.
  8. To make false by multilation or addition; to tamper with; as, to falsify a record or document.

v. i.

  1. To tell lies; to violate the truth.