What does "falsity" mean?

Falsity: That which is false; falsehood; a lie; a false assertion. Men often swallow falsities for truths. Sir T. Brown. -- Falsity, Falsehood, Lie. Falsity denotes the state or quality of being false. A falsehood is a false declaration designedly made. A lie is a gross, unblushing falsehood. The falsity of a person's assertion may be proved by the evidence of others and thus the charge of falsehood be fastened upon him.