- disprove: prove to be false; "The physicist disproved his colleagues' theories"
- (confutation) the speech act of refuting conclusively
- In informal logic an objection (also called expostulation or refutation), is a reason arguing against a premise, lemma or main contention. An objection to an objection is known as a rebuttal.
- To disprove or refute; to show something to be false or someone to be wrong