Refudiate

Blends are the simplest kind of slip of the tongue […] some examples […] "refudiating" (refuting + repudiating).

I am going to do everything I can along with the Chairman to see this Congress refudiate the certification of certain countries that are not complying.

a. 2008, Alan Moore writes in the subsection, Dr. Manhattan: Super-powers and the Superpowers, pg. iii, of Chapter IV, in Watchmen The suggestion that the presence of a superhuman has inclined the world more towards peace is refudiated by the sharp increase in both Russian and American nuclear stockpiles since the advent of Dr. Manhattan.

Words are coined on the spot, like “refudiate,” and regular words are used in ways that make sense only in context.

Palin tweeted that "peaceful Muslims" should "refudiate" the New York mosque being built near Ground Zero. This prompted plenty of retweets at her expense -- "refudiate," of course, is not a word.

[…] their articles were read to determine whether the citation was to substantiate or refudiate the initial claim or was it a "quote of acceptance".

‘Captain Blip? Never,’ he said, without ceasing to calculate. ‘I refudiate that.’ ‘You what?’ Jane felt suddenly cold all over. ‘There’s no such word, Denny.’

The value of given data can and must be judged regardless of the hypothesis they are supposed to support or refudiate.