What is Categorically Untrue?
1.
1) A totaly meaningless phrase
2) What someone important about a truth to try and get out of it.
3) "I'm lying"
Asked directly in a telephone interview if he brought up the prospect of Palin suffering from post-partum depression, Schmidt said: “His allegation that I was defaming Palin by alleging post-partum depression at the campaign headquarters is categorically untrue. In fact, I think it rises to the level of a slander because it’s about the worst thing you can say about somebody who does what I do for a living.”
See