The reason is clear, that he did not believe it: he must have known the falsity of the report.

That is a horrible blasphemy, the falsity of which will be seen in the future.

The falsity of the charge against Clay has been proved as nearly as a negative can be.

There was, in spite of what the girl called her falsity, something generous about her.

But it is not necessary to expose this falsity in its crude and most violent forms.

The truth or falsity of these stories of the peones I must leave to the inclination of the reader.

The readiness with which this cry was raised seemed evidence of its falsity.

And they play up to our bit of falsity till there is hell to pay.

In all this what ‘hypocrisy,’ ‘ambition,’ ‘cant,’ or other falsity?

Argumentation is the process of establishing the truth or falsity of a thing.