To counterfeit; to forge; to make something false, or in imitation of that which is true; as, to falsify coin. The Irish bards use to falsify every thing.

To disprove; to prove to be false; as, to falsify a record.

To violate; to break by falsehood; as, to falsify one’s faith or word.

To show to be unsound, insufficient or not proof. His ample shield is falsified.

To tell lies; to violate the truth. It is universally unlawful to lie and falsify.