One that falsifies.

plural of falsifier

(transitive) To alter so as to make false; to make incorrect. / (transitive) To misrepresent. / (transitive) To prove to be false. / (transitive) To counterfeit; to forge.

Logically capable of being proven false. / Capable of being falsified or forged.

The quality of being falsifiable.

Demonstrated to be false.

simple past tense and past participle of falsify

present participle of falsify

falsification

Third-person singular simple present indicative form of falsify