refutation

noun

1. the speech act of answering an attack on your assertions

   noun.communication

   Examples

   His refutation of the charges was short and persuasive.

   Synonyms defence defense

   Source: WordNet 3.0

2. any evidence that helps to establish the falsity of something

   noun.cognition

   Synonyms disproof falsification

   Source: WordNet 3.0

3. the act of determining that something is false

   noun.act

   Synonyms disproof falsification falsifying refutal

   Source: WordNet 3.0

4. The act or process of refuting or disproving, or the state of being refuted; proof of falsehood or error; the overthrowing of an argument, opinion, testimony, doctrine, or theory, by argument or countervailing proof.

   noun

   Source: webster1913