confutation

con·fu·ta·tion  (knfy-tshn)

n.

1. The act of confuting.

2. Something that confutes.

Thesaurus

Noun	1.	confutation - the speech act of refuting conclusively refutation, defence, defense - the speech act of answering an attack on your assertions; "his refutation of the charges was short and persuasive"; "in defense he said the other man started it"
	2.	confutation - evidence that refutes conclusively disproof, falsification, refutation - any evidence that helps to establish the falsity of something