A refutation proves that something is false. Refutations pop up often in law debates and philosophical arguments.
While a validation tells you something is true, a refutation does the opposite: it says or proves that something is untrue, refuting the claim. In court, a witness might offer a refutation of a suspect's alibi to show he's lying. If someone calls you a liar, you probably should give them a refutation — make the case that you're a person who tells the truth.
n the act of determining that something is false
n the speech act of answering an attack on your assertions
n any evidence that helps to establish the falsity of something
reductio, reductio ad absurdum
(reduction to the absurd) a disproof by showing that the consequences of the proposition are absurd; or a proof of a proposition by showing that its negation leads to a contradiction
evidence that refutes conclusively
refutation by example